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saveliy_v [14]
3 years ago
13

HELP 50 POINTS

Physics
2 answers:
Pie3 years ago
8 0

Answer:

D

Explanation:

Inga [223]3 years ago
7 0

Answer:

A

Explanation:

When you pull the string the weight will experience a downward force and come closer to the vertical tube. And the angle between weight and hand through string is decreased so the angular velocity decreases

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As we know that friction force on box is given by

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here we know that

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here we have

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so now we have

N = 12(9.8) = 117.6 N

now we will have

F_s = 0.42(12)(9.8)

F_s = 49.4 N

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