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1.7 Energy, work and power

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Question 132

A research drone of mass 15 kg15\text{ kg}15 kg is hovering stationary at a height of 420 m420\text{ m}420 m above the ground.

a.

State the two conditions necessary for the drone to remain in equilibrium.

[2]
b.

Calculate the change in gravitational potential energy of the drone as it rises from the ground to 420 m420\text{ m}420 m. (Take g=9.8 m/s2g = 9.8\text{ m/s}^2g=9.8 m/s2)

[2]
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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