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Chapter 1: Q7DQ (page 228)

A woman bounces on a trampoline, going a little higher with each bounce. Explain how she increases the total mechanical energy.

Short Answer

Expert verified

Thetotal energy is increased by increasing the potential energy.

Step by step solution

01

Concept/Significance of total mechanical  

If there are only the gravitational and elastic forces work on a particle, then the sum of kinetic and potential energies will be conserved. This sum E=K+U is known as the total mechanical energy of the particle.

02

Explain the increase in mechanical energy 

When a woman bounces on a trampoline, she transfers some muscular energy from her legs and body to depress the trampoline a little further each time to rebound higher. That is why she goes a little higher with each bounce.

Therefore, she acquires more potential energy for the next descent and the total mechanical energy of the woman will be increased.

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