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A frictionless vertical post is inserted into a bowling ball with a hole drilled through its...

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Physics

A frictionless vertical post is inserted into a bowling ballwith a hole drilled through its center. The ball has a mass of 10.5kg. A rope is attached to a ring that has been affixed to the ball.Kurt pulls on the rope at an angle of 0 = 24.5° with respect to thevertical with a constant force of magnitude |F| = 134 N .

(a) How much work does Kurt do onthe bowling ball by raising it through a vertical distance of 1.08m at a constant velocity?

(b) How much work does the Earth do on the ball while it isbeing raised through a distance of 1.08 m?

(c) Kurt is lazy and would like to be able to raise the ballthrough the same vertical distance with a minimum effort. What twochanges in his actions would you recommend to her?

(d) What is the net work done on the ball by the two forcesacting on it?

(e) If Kurt raises the mass in a time of 0.56 s what is hishorse power?

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