Laws Of Motion Question 155

Question: Two bodies of mass 3 kg and 4 kg are suspended at the ends of massless string passing over a frictionless pulley. The acceleration of the system is (g=9.8m/s2) [MP PET 1994; CBSE PMT 2001]

Options:

A) 4.9m/s2

B) 2.45m/s2

C) 1.4m/s2

D) 9.5m/s2

Show Answer

Answer:

Correct Answer: C

Solution:

Acceleration=(m2m1)(m2+m1)g

=434+3×9.8=9.87=1.4m/sec2



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