Thursday
December 18, 2014

Homework Help: Physics

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

First Name:
School Subject:
Answer:

Related Questions

physics - A 5.56 kg block located on a horizontal floor is pulled by a cord ...
physics - A 1,080-N crate is being pushed across a level floor at a constant ...
physics - A 1,440-N crate is being pushed across a level floor at a constant ...
Physics - A 1200-N crate is being pushed across a level floor at a constant ...
physics - A 1100 N crate is being pushed across a level floor at a constant ...
physics - Two boxes of fruit on a frictionless horizontal surface are connected ...
Physics - A dock worker loading crates on a ship finds that a 24 kg crate, ...
physics - A 450 g block is at rest on a horizontal surface. The coefficient of ...
physics - A 450 g block is at rest on a horizontal surface. The coefficient of ...
Physics - A 25 kg chain initially at rest on a horizontal floor requires a 365 N...

Search
Members