Which of the following is true for the speed v and the acceleration of a particle executing SHM

a)value of a is 0 whatever maybe value of v

b)when v is max ,a is 0

c)when v is 0 ,a is 0

d)when v is max , a is max

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

11

21

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