Posted by **mayrel** on Thursday, February 17, 2011 at 10:28am.

box full of books rests on a wooden floor. The normal force the floor exerts on the box is 235 N.

a) You push horizontally on the box with a force of 121 N, but it refuses to budge. What can you say about the coefficient of static friction between the box and the floor?

(b) If you must push horizontally on the box with a force of at least 135 N to start it sliding, what is the coefficient of static friction?

(c) Once the box is sliding, you only have to push with a force of 118 N to keep it sliding. What is the coefficient of kinetic friction?

## Answer This Question

## Related Questions

- mechanics - A 2kg box sits at rest on a level floor. Two children push on the ...
- Physics - A box of mass m1 = 10.0 kg rests on a smooth, horizontal floor next to...
- physics - A wooden box weighing 271 N is pushed across the floor by a workman ...
- physics - wooden box weighing 271 N is pushed across the floor by a workman who ...
- physics - A wooden box weighing 281 N is pushed across the floor by a workman ...
- physics - a wooden box weighing 286N is pushed across the floor by a workman ...
- Physics - A box of books weighing 337 N is shoved across the floor by a force of...
- physics - A box of books weighing 314 N is shoved across the floor by a force of...
- Physics help! - A box of books weighing 323 N is shoved across the floor by a ...
- Physics - A box of books weighing 337 N is shoved across the floor by a force of...

More Related Questions