Solving 3 examples problems involving coefficient of friction.
0:00 - Intro, Problem 1
1:22 - Problem 2 (extension to 1st problem)
3:44 - Problem 3
1st problem:
A block weighing 5.4 N requires a force of 2.5 N to push it along at a constant velocity. What is the coefficient of friction for the surface?
2nd Problem:
A weight W is now placed on the block and 4.2 N is needed to push them both at a constant velocity. What is the weight W of the block?
3rd Problem:
A 100 N force is applied to the side of a crate resting on a level floor. The crate has a mass of 50 kg. If the coefficient of static friction is 0.25, is the 100 N force enough to make the crate accelerate?
