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1.7 Energy, work and power

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Question 65

A toy block is attached to a vertical elastic cord suspended from a ceiling. The block is pulled downwards to a point Y Y\,Y and released from rest. It then oscillates vertically between Y Y\,Y and a higher point XXX (without the cord ever becoming slack).

Which types of energy alternately increase and decrease throughout these oscillations?

A

gravitational potential energy, kinetic energy, and elastic potential energy

B

gravitational potential energy and kinetic energy only

C

gravitational potential energy and elastic potential energy only

D

kinetic energy and elastic potential energy only

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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