A 5.0kg mass is accelerated from rest at the bottom of the 4.0 m long

1. Apr 18, 2013

oneshot

1. The problem statement, all variables and given/known data

A 5.0kg mass is accelerated from rest at the bottom of the 4.0 m long ramp by a falling 20.0kg mass suspended over a fictionless pulley. The ramp is inclined 30º ramp from the horizontal, and the coefficient of kinetic friction = .26.
a. Determine the acceleration of the 5.0 kg mass along the ramp.
b. Determine the tension in the rope during the acceleration on the 5.0 kg mass along the ramp.

2. Relevant equations

ma = mg - Ft for the lower block

3. The attempt at a solution

what do I do with the block on the inclined plane?

2. Apr 18, 2013

Simon Bridge

Hint: free body diagram.

3. Apr 18, 2013

oneshot

FBD is a necessity...

4. Apr 18, 2013

Simon Bridge

You will have two of them - one for the block on the slope and one for the falling mass.

5. Apr 18, 2013

flannabhra

As stated in the previous comments, a FBD is useful. With that you will be able to analyze all the forces acting on the masses and from there find the solution.

Remember F = ma!!!
--Without a doubt, the most important equation for mechanics--