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In: Physics

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

A frictionless vertical post is inserted into a bowling ball with a hole drilled through its center. The ball has a mass of 10.5 kg. 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 the vertical with a constant force of magnitude |F| = 134 N .

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

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

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

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

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

Solutions

Expert Solution

genius_generous answered 11 months ago
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