A classical mechanics problem by satish varma
Satish(yellow one) has dropped a ball(red one) of unknown mass on an inclined surface with inclination angle 45 degrees. He wants to find the velocity with which it touches ground.he knew horizontal distance between him and where ball touches ground is 20m. help him finding velocity.
The answer is 20.
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1 solution
since angle of inclined plane is 45°, vertical height from which is ball is dropped is also 20m. using conservation of energy
½mv²= mgh
v²=2gh
v=sqrt (2.10.20)
v=20 m/s