Chapter 11.2, Problem 24SSC

(a)

To determine

To Draw: Energy bar diagrams to show forms of energy when child is at the highest point while jumping on a trampoline.

Explanation of Solution

Introduction:

Total energy of a system remains conserved as per law of conservation of energy. One form of energy can be changed to another but new energy cannot be created or it cannot just disappear.

When a child jumps on a trampoline and is at highest point, then the kinetic energy is zero, elastic potential energy is zero but gravitational potential energy is maximum. This has been shown in the energy bar diagram below:

  

(b)

To determine

To Draw: Energy bar diagrams to show forms of energy when child is at the lowest point while jumping on a trampoline.

Explanation of Solution

Introduction:

Total energy of a system remains conserved as per law of conservation of energy. One form of energy can be changed to another but new energy cannot be created or it cannot just disappear.

When a child jumps on a trampoline and is at lowest point, then the kinetic energy is zero, elastic potential energy is maximum and gravitational potential energy is zero. This has been shown in the energy bar diagram below: