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Physics problems: conservation laws

Elastic potential energy: energy in a spring

 

Problem 14.

A body of mass 5 kg slides a distance of 6 m down a rough Inclined plane 30 degree. Then it moves on frictionless horizontal surface and compresses a spring. The coefficient of kinetic friction is 0.1 and the spring constant is 300 N/m. Find the maximum compression of the spring.

Solution

 

Problem 17.

Calculate the displacement to amplitude ratio for simple harmonic motion when kinetic energy is 90% of the total energy.

Solution

 

 

 

 

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