Posted by **Jeanne** on Monday, October 10, 2011 at 11:28am.

Two boxes on a horizontal surface, as shown in the figure above, are moving together under the influence of a horizontal force, F. The coefficient of kinetic friction between the boxes and the surface is 0.40. Use g = 10 m/s2. In case (a), a horizontal force F directed right is applied to the larger box, which has a mass of 8.00 kg. In case (b), the horizontal force F is instead applied to the smaller box, which has a mass of 4.00 kg. The horizontal force F has a magnitude of 110. N.

(a) Let's say that the boxes are moving to the right, in the direction of the force F. What is the magnitude of the force exerted by the larger box on the smaller box in:

(i) case (a)

(N)

(ii) case (b)

(N)

(b) Now, consider the case in which the boxes are initially moving to the left, opposite to the direction of the force F.

(i) For case (a), what is the magnitude of the acceleration of the system?

(N)

(ii) For case (a), what is the magnitude of the force applied by the larger box on the smaller box?

(N )

## Answer this Question

## Related Questions

- physics - Two boxes of fruit on a frictionless horizontal surface are connected ...
- Physics- PLEASE HELP - Two boxes of fruit on a frictionless horizontal surface ...
- Physics- PLEASE HELP - Two boxes of fruit on a frictionless horizontal surface ...
- Physics- Elena please help! - Two boxes of fruit on a frictionless horizontal ...
- Physics - A box of mass 50.0 kg is connected to a second box with a mass of 54.0...
- physics - Two boxes of masses 21.6 kg and 28.2 kg sit on a smooth, frictionless ...
- Physics - A force of 50 N directed 30 degrees above the hoizontal is applied to ...
- physics - A 450 g block is at rest on a horizontal surface. The coefficient of ...
- Physics - Two blocks are attached together with a piece of string. Block #1 (3 ...
- Physics - Two blocks are attached together with a piece of string. Block #1 (3 ...

More Related Questions