# Physics

You drag a heavy box along a rough horixontal floor by a horizontal rope. Identify the reaction force to each ofthe follwing forces: A) the pull of the tope on the box. B) the friction force on the box C) the normal force on the box, and D) the weight of the box.

1. 👍
2. 👎
3. 👁
1. B is the reaction of A and vice versa.
D is the reaction of C and vice versa.

1. 👍
2. 👎
2. what does it mean in the question identify the reaction force is there a certain name???

1. 👍
2. 👎
3. Newton's third law says that for every action there is a reaction.

So when you pull the box resting on a rough surface, there is a resistance due to the friction between the box and the surface. This resistance is the reaction to the pulling force, the force that balances the applied force.

The same for the weight of the box, which acts downwards. Since it is in equilibrium, i.e. no motion in the vertial direction, there has to be a reaction, which is the reaction from the surface, a force which acts upwards to balance out the weight of the box.

These four forces form two couples. The two forces in each couple act as the reaction of each other.

If you want some further reading, try googling "Newton's third law", or perhaps:
http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l4a.html

1. 👍
2. 👎
4. "B is the reaction of A and vice versa. "
is meant to be:
the friction force on the box is the reaction of the pull of the tope on the box and vice versa.

1. 👍
2. 👎

## Similar Questions

1. ### Physics

A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. Part

2. ### Physics

A box of unknown mass is sliding with an initial speed vi = 5.40 m/s across a horizontal friction-less warehouse floor when it encounters a rough section of flooring d = 3.50 m long. The coefficient of kinetic friction between the

3. ### physics

a girl is using a rope to pull a box that weighs 300N across a level surface with constant velocity. the rope makes an angle of 30 degree above the horizontal and the tension in the rope is 100N. What is the normal force of the

4. ### Physics

A horizontal rope is tied to a 45.0kg box on frictionless ice. What is the tension in the rope if: A) The box is at rest? B) The box moves at a steady vx = 4.40m/s ? C) The box vx = 4.40m/s and ax = 4.60m/s2 ?

1. ### physics

A heavy box is pulled across a wooden floor with a rope. The rope forms an angle of 60.0o with the floor. A tension of 80.0N is maintained on the rope. What are the horizontal and vertical components of the force?

2. ### physics

A student pulls on a rope attached to a box of books and moves the box down the hall. The student pulls with a force of 182N at an angle of 25° above the horizontal. The box has a mass of 35kg and &mu k between the box and the

3. ### Physics

A rope is used o pull a metal box 15.0m across the floor. The rope is held at an angle of 46.0 degrees with the floor and a force of 628N is used. How much work does the force of the rope do?

4. ### physics

Sally applies a total force of 71 N with a rope to drag a wooden crate of mass 100 kg across a floor with a constant acceleration in the x- direction of a = 0.1 m/s2. The rope tied to the crate is pulled at an angle of  = 50 

1. ### Physics

A 51-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 34.0° above the horizontal. If the tension in the rope is 115 N, how much work is done on the crate to move it 9.7 m

2. ### physics

2. A heavy box is pulled across a wooden floor with a rope. The rope forms an angle of 60.0°with the floor. A tension of 80.0° N maintained on the rope. What are the horizontal and vertical components of the force?

3. ### physics

a mule uses a rope to pull a box that weighs 3.0x10^2N across a level surface with a constant velocity. the rope makes an angle of 30.0 degrees above the horizontal and the tension in the rope is 1.0x10^2N. what is the normal

4. ### Physics I for College

a rope that makes an angle of 30 degrees with the horizontal drags a crate along the floor. what must be the tension in the rope if a horizontal force of 40N is needed to drag the crate? please help me. i really didn't understand