Work-Energy FRQ 1.docx - AP Physics C mechanics Work-Energy FRQ 1989M1 A 0.1-kilogram block is released from rest at point A as shown above a vertical

# Work-Energy FRQ 1.docx - AP Physics C mechanics Work-Energy...

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AP Physics C mechanics Work-Energy FRQ 1989M1. A 0.1-kilogram block is released from rest at point A as shown above, a vertical distance h above the ground. It slides down an inclined track, around a circular loop of radius 0.5 meter, then up another incline that forms an angle of 30° with the horizontal. The block slides off the track with a speed of 4 m/s at point C, which is a height of 0.5 meter above the ground. Assume the entire track to be frictionless and air resistance to be negligible.a.Determine the height h .b.On the figure below, draw and label all the forces acting on the block when it is at point B. which is 0.5 meter above the ground.c.Determine the magnitude of the force exerted by the track on the block when it is at point B.d.Determine the maximum height above the ground attained by the block after it leaves the track.e.Another track that has the same configuration, but is NOTfrictionless, is used. With this track it is found that if the block is to reach point C with a speed of 4 m/s, the height h must be 2 meters. Determine the work done by the frictional force.