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Newton's Third Law

For every action, there is an equal and opposite re-action.


A force is a push or a pull upon an object that will result from its interaction with another object. Whenever objects A and B interact with each other, they exert forces upon each other. A force is exerted by one object onto another object. When one object exerts a force on a second object, the second object also exerts a force on the first object. The two forces are equal in strength and in opposite directions.

For example, when you sit in our chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction. The first force is on the chair and the second is the force on our body. These two forces are called action and reaction forces and they are the subject of Newton’s third law of motion

Components of Force

See attached file for formulas. Please complete the attached problems, providing both solutions (all steps) and answers. Object A, which has been charged to +13.0 nC, is at the origin. Object B, which as been charged to - 27.5 nC, is at (x,y) = (0.0 cm, 2.00 cm). Part A What is the x-component of the force on

Breaking a Glass Soda Bottle: Force, momentum and pressure.

A glass soda bottle is emptied of soda and filled to the very top with water. A cork is carefully fitted into the top of the bottle, leaving no air between the cork and the water.The top of the bottle has a diameter of D_top = 2.00 cm and the bottom of the bottle has a diameter of D_bot = 6.50 cm. The glass breaks when it is exp

The Normal Force Exerted

A 33 kg crate rests on a horizontal floor, and a 77 kg person is standing on the crate. (a) Determine the magnitude of the normal force that the floor exerts on the crate. (b) Determine the magnitude of the normal force that the crate exerts on the person.

Law of inertia

Start a ball rolling down a bowling alley and you'll find it moves slightly slower with time. Does this violate Newton's law of inertia? Defend your answer.

5 Discussions on Fluid statics: Weight and Upthrust

Physics 213 class discussions Please answer each question since our teacher did a poor job of not only explaining each situation(1-5), but did not give pictures on the chalk board of forces, etc or to see what is visually going on. Please add anything to help me learn please! Choose the correct answer or state not enough

Archimedes' Principal: Buoyant force

A.) Water is in the big beaker in the figure on the left. Scale 1 reads 83 newtons, scale 2 reads 677 newtons, and scale 3 reads 0 newtons. The hanging block has a density of 10 x 103 kg/m3. To the nearest tenth of a newton what does scale 1 read after the block is fully lowered into the beaker of water? b.) To the nearest te

Force Needed and Theta Degrees

Your car is stuck in a mud hole. You are alone, but you have a long, stong rope. Having studied physics, you tie the rope tautly to a telephone pole and pull on it sideways. a) Find the force exerted by the rope on the car, when the angle theta is 3 degrees, and you are pulling with a force of 400, but the car does not move.

What is the magnitude of N, the normal force?

A student of weight 656 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from the seat is 551 N. a.What is the magnitude of N at the lowest point? b.What is the magnitude of N if the wheel's speed is doubled?


What forces are involved with a zipper?