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1 st Year : Unit 3.2( Laws of Motion ) - Connected Bodies

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The monkey B shown in figure is holding on to the tail of the monkey A which is climbing up a rope. The masses of the monkeys A and B are 5 kg and 2 kg respectively. If A can tolerate a tension of 30 N in its tail, what force should it apply on the rope in order to carry the monkey B with it ? [Take g =10 ms^-2].

A. Between 70 N and 105 N

B. Between 50 N and 69 N

C. Between 30 N and 50 N

D. Between 106 N and 116 N

E. None of the above

View Answer

Correct choice: A

Explanation:

T = 2g
But given T = 30N ‘A’ is climbing with acc ‘a’
T – 2g = 2a
30 – 20 = 2a, a = 5ms^-2
T¹ – T – 5g = 5a T¹ = T + 5g +5a
T¹ = 30 + 50 + 5(5) T¹ =105N

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Eamcet Physics 1 st Year : Unit 3.2( Laws of Motion ) - Connected Bodies

Eamcet Physics
1 st Year : Unit 3.2( Laws of Motion ) - Connected Bodies