Laws of MotionHard

Question

Two blocks A and B of mass 10 kg and 40 kg are connected by an ideal string as shown in the figure. Neglect the masses of the pulleys and effect of friction. (g = 10 m/s2)

Options

A.The acceleration of block A is ms-2
B.The acceleration of block B is α ms-2
C.The tension in the string is N
D.The tension in the string is N

Solution


By string constraint 
aA = 2aB  ................................(1)
equation for block A.
        10 × 10 × − T = 10 aA  ......(2)
equation for block B.
        2T − =  40 aB .........................(3)
Solving equation (1) , (2) & (3)   we get
         aA = m/s2
         aB = m/s2
          T = N

Create a free account to view solution

View Solution Free
Topic: Laws of Motion·Practice all Laws of Motion questions

More Laws of Motion Questions

Drums of oil are carried in a truck. If a constant acceleration is applied on the truck, the surface of the oil in the d...A small block of mass $m$ slides down from the top of a frictionless inclined surface, while the inclined plane is movin...A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the for...If the parrot starts flying upwards with an acceleration the boy will feel the weight of the cage as air tight cage...Two blocks, each having mass M, rest on frictionless surfaces as shown in the figure. If the pulleys are light and frict...