Question

take two aluminium channels of different lengths​

Answer 1

Answer:

study the following activity and answer the question take to aluminium channels of different lengths place the lower end of the channels on the floor and hold their offer ends at the same height now take 2 balls of the same size and weight and release them from the top end of the channels they will roll down and cover

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Answer 2

Answer:

Now as the balls roll down they will gain velocity and height of the balls above the floor will decrease, i.e. potential energy of the ball will be decrease and kinetic energy will increase as they roll down with velocity v as shown in figure

Now kinetic energy of the balls of mass m moving with velocity v will be

K.E. = � mv2

Explanation: