IB Physics HL A.3.11 Elastic Potential Energy Question Bank
Practise HL elastic-energy calculations for springs, equilibrium, parallel systems and deformation in quantitative exam questions.
- Syllabus
- First assessment 2025
- Course
- Physics HL
- Level
- HL
Practise HL elastic-energy calculations for springs, equilibrium, parallel systems and deformation in quantitative exam questions.
An elastic climbing rope is tested by fixing one end of the rope to the top of a crane. The other end of the rope is connected to a block which is initially at position A. The block is released from rest. The mass of the rope is negligible.

diagram not to scale
The unextended length of the rope is 60.0 m . From position A to position B, the block falls freely.
The length reached by the rope at C is 77.4 m . Suggest how energy considerations could be used to determine the elastic constant of the rope.
k can be determined using EPE =21kx2
correct statement or equation showing
GPE at A = EPE at C
OR
(GPE + KE) at B = EPE at C
Candidate must clearly indicate the energy associated with either position A or B for MP2.