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A block with mass 12.0 kg is on a ramp that is inclined at an angle...

A block with mass 12.0 kg is on a ramp that is inclined at an angle of 50.0 degrees above the horizontal. The block is accelerating up the ramp at 3.0 m/s2 as you pull on it with a string parallel to the surface of the ramp with a constant force of 140 N.\

A) Draw a free body diagram for the block moving up the ramp and choose a convenient xy-coordinate system to apply Newton's laws of motion.

B) Find the force of friction between the block and the ramp.

C) Find the coefficient of kinetic friction between the block and the ramp.

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Answer #1


Q=3 m/s2 140N asino Hm E W0 - 50 EBD = sinoet mg Sino B7 Fnet = mx a = 12x3 = 36N Freet = 140- 12x9.81 xgin 50 - Fr TESNIS 36

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