Multiple Choice
A mass m is hanging on a string that passes over a pulley and is then attached to another mass 3m that is resting on a horizontal table.Neglect friction.Mass m is held motionless and is then released.When it has fallen a distance h,it will have a speed v which can be calculated from the formula
A) 
B) 
C) 
D) 
E) None of these is correct.
Correct Answer:

Verified
Correct Answer:
Verified
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