# What Determines How Much Gravity An Object Has

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### 3-4 Connecting Force and Motion

of gravity alone, only one force, the force of gravity, appears on each free-body diagram. The force of gravity is proportional to mass, so the force of gravity acting on the second object is three times larger than the force acting on the first object. Figure 3.9 is correct, but these free-body

### Forces Section 1 Section 1: Newton s First and Second

Aug 11, 2015 〉What determines how much an object speeds up or slows down? 〉Net force is equal to mass times acceleration. The unbalanced force on an object determines how much an object speeds up or slows down. This principle is Newton s second law. net force = mass × acceleration, or F = ma Force is measured in newtons (N): 1 N = 1 kg ×

### L-6 The Laws of Motion Force is a vector quantity

The Net Force determines the acceleration of the object net force Example: Net force = 0 Net force = 0 An object can have many forces acting on it at the same time. If all the forces oppose each other exactly then the net force = 0 and the object will either be at rest or move with constant velocity. tension in string weight of block

### UNIT #3 Forces

Weight is the force of gravity on an object. It is common to describe the amount of matter in an object by its gravitational pull to Earth, that is, by its weight. In most parts of the world the measure of matter is commonly expressed in units of mass, the kilogram (kg). At Earth s surface, 1 kilogram has a weight of 9.81 Newton s.

### Potential Energy - Weebly

An object itself doesn t have gravitational potential energy; it has gravitational potential energy because it is part of the Earth-object system. Earth has potential to do work on the object through the force of gravity. The object s location relative to the surface of the Earth determines how much energy the work done by the

### Bitesize GCSE Science - Physics

Gravity depends on how massive, that is how much mass the object that fields it has. In the case of the Earth we have a planet which has a particular mass so it has a particular strength of gravity and we feel that strength of gravity as weight when we are on the planet. If we were to go to another planet which had a different mass to the Earth we

Gravity - 2 object. As the object falls towards the center it speeds up. This change in speed over time is known as the acceleration due to gravity. Acceleration is the change in speed over time and is measured in meters per second squared (m/s2). This acceleration is what determines how much an object weighs on a given planet. Therefore, we

### Understanding Motion, Energy, and Gravity

What determines the strength of gravity? Directly proportional to the product of the masses (M x m) Inversely proportional to the square of the separation How does Newton s law of gravity allow us to extend Kepler s laws? Applies to other objects, not just planets. Includes unbound orbit shapes: parabola, hyperbola

### Understanding Motion, energy, and gravity

ment. What happens? Explain how this experiment suggests that gravity acceler-ates all objects by the same amount. The acceleration of a falling object is called the acceleration of gravity, abbreviated g. On Earth, the acceleration of gravity causes fall-ing objects to fall faster by 9.8 meters per second (m/s), or about 10 m/s,

### Physics 41N - Stanford University

is not involved in determining the period of oscillation. The eﬀect of gravity is uniquely determined by the third equation, because gravity is the only variable on the right involving time: γ = −1/2. Substituting this into the second equation, we get α = 1/2. Therefore, our equation for the period of oscillation becomes T = k s g.

### SECOND LAW OF MOTION NEWTON S 6MOTION FORCE AND ACCELERATION

object. For example, after the boy kicks the football in Figure 6.1, both gravity and air resistance act on the football. Recall from the previous chapter that the combination of forces acting on an object is the net force. Acceleration depends on the net force. To increase the acceleration of an object, you must increase the net force acting

Explain which has a greater impact on the kinetic energy of an object the object s mass or the object s speed? The speed of an object has a greater impact, because KE is proportional to ½ the mass of the object but to the speed squared. Explain how you could increase the potential energy of an object.

### Exploring Your Weight Across the Solar System

the mass of an object, and it is common for Americans to use pounds as a measure of weight. On Earth, the force that one kilogram of mass has on the bathroom scale is equal to 9.8 Newtons or a weight of 2.2 pounds. The surface gravity of a planet or other body is what determines your weight by

### Science Test Prep, Chapter 12 - Stroopers Education

the force exerted on an object (for example, push, pull, friction, gravity) determines how much the object will move. Answer Strategy: A pulley uses a wheel and rope to move things up and down. The picture shows someone using a pulley to raise the window shade. Vocabulary lever a simple machine used to lift something (page 358)

### IT S UNIVERSAL GRAVITY CONCEPTS

Earth, it has a much weaker pull on you. This means your weight would be less on the Moon than on Earth. In fact, you would weigh about one-sixth what you weigh on Earth. ! Weight is a measure of the gravitational force pulling an object toward Earth s center. The more mass, or matter, that an object contains, the more it weighs. But

### Measuring Gravity: Thinking outside the box

A force, like gravity, acting on a mass makes it accelerate. But acceleration is change in velocity, which has two components direction and speed. So you can accelerate a mass by: 1. changing its speed travelling in a straight line (e.g. apples falling), and/or

### KEY CONCEPT Friction is a force that opposes motion.

each other. When an object is placed on a surface, the weight of the object presses on that surface. The surface exerts an equal and oppo-site reaction force on the object. This reaction force is one of the factors that determines how much friction there is. If you push a chair across the floor, there will be a certain amount

### Chapter 5. The Laws of Motion - lcps.org

5.5. The Force of Gravity and Weight The weight of an object is defined as F g =mg 5.6 Newton s 3rd Law - If two objects interact, the force F 12 exerted by object 1 on object 2 is equal in magnitude to and opposite in direction to the force F 21 exerted by object 2 on object 1: F 12 = F 21

### Chapter 2 Basic physical concepts

Acceleration is the rate of change of velocity, i.e. how much an object increases or decreases its speed, or changes direction, in a unit time. If we drop a ball it accelerates towards the center of the earth due to the intrinsic attraction of masses for each other. The acceleration of an object due to gravity has special importance for

### Chapter 4 Making Sense of the Universe: Understanding Motion

(M1 + M2) = sum of object masses What have we learned? What determines the strength of gravity? Directly proportional to the product of the masses (M x m) Inversely proportional to the square of the separation Hd Nt l f itll t tdHow does Newton s law of gravity allow us to extend Kepler s laws?

### Exploring Your Weight Across the Solar System 18

the mass of an object, and it is common for Americans to use pounds as a measure of weight. On Earth, the force that one kilogram of mass has on the bathroom scale is equal to 9.8 Newtons or a weight of 2.2 pounds. The surface gravity of a planet or other body is what determines your weight by

### THE EFFECTIVE DENSITY AND VISCOSITY OF A SUSPENSION

component solid-liquid suspensions. Particular emphasis has been given to the effective values of density and viscosity of the mixture which allows us to describe the settling of the spheres in the mixture using appropriate modifications of the equations valid for the settling of spheres in pure fluids. Printed 1995 in J. Rheology, 39(2), 323-343.

### Newton s laws of motion and gravity

Every object attracts every other object with a force ⇒ F (gravity) = (mass 1) x (mass 2) / R2 (distance squared) Notice this is an inverse square law (right illus.). Orbits of planets (and everything else) are a balance between the moving object s tendency to move in a straight line at constant speed (Newton s 1st law) and the

### Unit Zero: Overview

object has. Your skin, mouth, and tongue are antennae which can sense thermal energy. When an object absorbs heat, it does not necessarily change temperature. Velocity has both a speed (like 55 mph) and a direction (like northeast). Weight is a measure of how much gravity is pulling on an object. Work is moving something against a force over a

### Section 2.2: Difference between Weight and Mass

2 A spring balance determines that an unknown mass has a weight of 24.5 N. Find the mass. 3 A 7.50 kg object is placed on a spring scale. If the spring scale reads 78.4 N, what is the acceleration of gravity at that location? 4 A car has a mass of 1200 kg. How much would the car weigh on the moon where the

### KEY CONCEPT Gravity is a force exerted by masses.

Mass is a measure of how much matter an object contains. is the force of gravity on an object. Mass is a property that an object has no matter where it is located. Weight, on the other hand, depends on the force of gravity acting on that object. Weight 2 1 Chapter 12:Gravity, Friction, and Pressure383 VISUALIZATION CLASSZONE.COM Explore how

### Chapter 4: Making Sense of the Universe: Understanding Motion

What determines the strength of gravity? Directly proportional to the product of the masses (M ×m) Inversely proportional to the square of the separation How does Newton's law of gravity allow us to extend Kepler's laws? Applies to other objects, not just planets Includes unbound orbit shapes: parabola, hyperbola

### Physics 121C Mechanics

by the long-range force of gravity. The gravitational pull on a object on or near the surface of the Earth is called weight, for which we use the symbol w. Weight is the only long range force that we will consider in this course. The agent for the weight force is the entire Earth pulling on the object. Weight acts equally on objects at rest

### Centre of gravity - Royal Academy of Engineering

on an object, F, can be related to its mass, m, through the approximating expression F = mg where g is the acceleration due to gravity, usually taken to be 9.81 ms−2 at the earth s surface. As stated in the problem statement, the centre of gravity of an object is the average position of

### What 2 factors determine whether an object will float or sink

1. Gravity (pulls object downward) 2. Buoyant force (pushes object upward) The buoyant force is equal to the weight of the volume of water displaced by the object. What does that mean? Essentially: the more water the object can move out of the way (displace), the greater the upward force (buoyancy).

### Electricity - Physics

Electricity is a force much like gravity but many times more powerful. Unlike gravity, electrical forces can be attractive or repulsive. Gravity has only one type of mass. Electricity has two types of 'charge' positive and negative. Like changes (two positive or two negative changes repel one another. Two unlike changes (one

### PHYS:1200 LECTURE MECHANICS

The center of gravity (CG) of an object is the hypothetical point in the object where the force of gravity is considered to act. For any object that has a simple shape, like a rectangle, cube or a sphere, the CG is exactly at its center.

### Projects Test Monday

is often used to calculate the mass of a large celestial object from the orbital period and radius of a much smaller mass Surface Gravity Surface gravity is the acceleration a mass undergoes at the surface of a celestial object (e.g., an asteroid, planet, or star) Surface gravity: Determines the weight of a mass at a celestial

### 3. Force and Gravity

The Equation of Newton s Law of Gravity Newton s Law of Gravity gives the gravity force between two objects with masses m and M separated by distance r: F G mM r2 G is called the Gravitational Constant, and has the value 6.67u10 11N m2kg 2 (N is for Newton, the physicists unit of force)or 1.5u10 11lb m2kg 2.

After many experiments, Newton realized something: the force of gravity depends on an object's mass. Mass is how much material is in an object. The more mass an object has, the greater its force of gravity. Newton made another important realization. Gravity doesn't just depend on mass. It also depends on the distance between two objects.

### Force and Motion

individual interaction forces acting on an object. If the net force on an object isn t zero, then the object s motion must be changing in direction or speed or both (Fig. 4.2). If a the net force on an object is zero no matter what individual interaction forces contribute to the net force then the object s motion is unchanging (Fig

### Buoyancy

An object's center of gravity is the point in the object where all of the object's weight appears to be concentrated; it can also be thought of as the average location of the object's weight. The center of buoyancy is the center of gravity of the water that the object has displaced.

### Chapter 4 How do we describe motion? - Physics & Astronomy

strength of gravity (g) distance object could potentially fall Gravitational Potential Energy In space, an object or gas cloud has more gravitational energy when it is spread out than when it contracts. A contracting cloud converts gravitational potential energy to thermal energy. Mass-Energy