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1.7 Energy, work and power

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Question 13

A mass suspended vertically from a spring is pulled down and released, causing it to oscillate between a lowest point QQQ and a highest point PPP.

As the mass moves upwards from point QQQ to point PPP:

a.

How does its gravitational potential energy change?

[2]
b.

How does its kinetic energy change?

[3]
c.

How does its elastic potential energy change (assuming the spring is always stretched throughout the motion)?

[3]
Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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