Laws Of Motion Question 85

Question: Two blocks are connected by a string as shown in the diagram. The upper block is hung by another string. A force F applied on the upper string produces an acceleration of 2m/s2 in the upward direction in both the blocks. If T and T be the tensions in the two parts of the string, then [AMU (Engg.) 2000]

Options:

A) T=70.8N and T=47.2N

B) T=58.8N and T=47.2N

C) T=70.8N and T=58.8N

D) T=70.8N and T=0

Show Answer

Answer:

Correct Answer: A

Solution:

FBD of mass 2 kg FBD of mass 4kg TT20=4 ..(i)

T40=8 -(ii)

By solving (i) and (ii) T=47.23N and T=70.8N



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