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2. Block A of mass m and block B which has a mass of 2m are connected by a string of negligible mass

that runs over a frictionless pulley. The coefficient of kinetic friction between the incline and block

A is H. The blocks are released from rest when block A is at location C. Determine the change in

the kinetic energy of block A as it moves from C to

D which is a distance L up the incline. Assume that

block B is still off of the ground when A gets to

location D. Answer should be in terms of

m, L, 0, H, and g.

37⁰

A

B

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1

Fig: 1