Posted by **Anonymous** on Thursday, November 29, 2012 at 11:35pm.

An 85.7 N box of clothes is pulled 26.2 m up

a 31.7

◦

ramp by a force of 112 N that points

along the ramp.

The acceleration of gravity is 9.81 m/s

2

.

If the coeﬃcient of kinetic friction between

the box and ramp is 0.24, calculate the change

in the box’s kinetic energy.

Answer in units of J

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