Question 11
FA bungee jumper steps off a platform.
The Figure shows the jumper at three positions, A, B and C.
Figure
a.[2]
Describe the changes in the energy stores of the jumper as the jumper falls from A to B.
b.[3]
Describe the changes in the energy stores as the jumper moves from B to C.
c.[2]
From A to C, the gravitational store of the jumper decreases by 36 000 J36\,000\ \text{J}36000 J.
At C, the elastic store of the cord is 34 500 J34\,500\ \text{J}34500 J.
Calculate the energy transferred to thermal stores between A and C.
d.[2]
After reaching C, the jumper moves back up.
Explain why the jumper does not return to the height of the platform.
8.1 Energy transfers and work Questions
115 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work, covering 8.1.1 Energy stores and transfer diagrams, 8.1.2 Ways of changing a system's energy, and 8.1.3 Work done by forces. Each one has a worked solution and a mark scheme showing where the marks go.