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joshi gorle Grade: 12

1. A hammer is hanging by a light rope from the ceiling of a bus. The ceiling of the bus is parallel to the

roadway. The bus is traveling in a straight line on a horizontal street You observe that the hammer hangs at

rest with respect to the bus when the angle between the rope and the ceiling of the bus is 74°. What is the

acceleration of the bus?

2. A bowling ball weighing 71.2 N (16.0 lb) is attached to the ceiling by a 3.80-m rope. The ball is polled

to one side and released; it then swings back and forth as a pendulum. As the rope swings through the vertical,

the speed of the bowling ball is 4.20 m/s. (a) What is the acceleration of the bowling ball, in magnitude and

direction, at this instant? (b) What is the tension in the rope at this instant?

7 years ago

Answers : (1)

879 Points

Dear student,

Use the formula that acceleration a=tan theta

so take tan 74

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

7 years ago
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