Integer type -3
Classical Mechanics
Level
3
A force F is applied to a system of light pulleys to pull body A . If F is 10 KN and block of mass A has a mass of 5000 kg , what is the speed(in S.I.units) of A after 1 sec. Starting form rest? Assume no firction.
5
3
2
1
6
8
9
4
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1 solution
let the tension in the string be T sice the pulley is light 2T = F therefore, T = 5 kN now, force on the block is 4T = 20 kN Acceleration, a = F/M = 4 m / s 2 speed after 1 second = 4m/s