Question

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31. Two bodies of masses 3kg and 2kg are
connected by a long string and the string is
made to pass over a smooth fixed pulley.
Initially the bodies are held at the same level
and released from rest. The velocity of the 3kg
body after one second is (g=10m/s)
1)2m/s 2) Im/s 3)0.4m/s 4) 4m's​

Answer 1

hey mate here's your answer

2m/s

If a is the acceleration of the system, then the equation of motion of the system,

(m1+m2)a=Fnet=(m1−m2)g

a=m1+m2m1−m2g=2m/s2

Now using , v=u+at where u=0 and t=1 s

v=at=2×1=2m/s

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