A bowler lifts a bowling ball from the floor and places it on a rack. If you kno
ID: 1520950 • Letter: A
Question
A bowler lifts a bowling ball from the floor and places it on a rack. If you know the weight of the ball, what else must you know in order to calculate the work she does on the ball? A. the time required to lift it B. the weight of the person lifting the ball C. height of rack D. mass of the ball E. no other information is needed A bowler lifts a bowling ball from the floor and places it on a rack. If you know the weight of the ball, what else must you know in order to calculate the work she does on the ball? A. the time required to lift it B. the weight of the person lifting the ball C. height of rack D. mass of the ball E. no other information is neededExplanation / Answer
C and D.
As work will be done against gravity by the bowler. It will be -ve of work done by gravity. Hence work done by bowler = mgh.
Where m is mass of the ball, g is acceleration due to gravity and h is height of rack.
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