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April 25, 2015

Homework Help: Physics

Posted by Dar on Thursday, February 18, 2010 at 10:34pm.

A block is pulled 2.9 meters up a 30 rough incline by an applied force Fa = 170 N, directed up the ramp. The frictional force has a magnitude of 90 N. The block starts from rest and has a final kinetic energy of 16 J.

Find the following:

a) The total work done on the block, Wtot =___ J

b) The work done on the block by gravity, Wg =___ J

c) The mass of the block, m =___ kg

d) The final speed of the block =___ m/s

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