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3 Conservation of energy

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Question 11

During a scenery change, a theatre counterweight of mass 12 kg is lowered by a winding mechanism. The mechanism makes five turns, and each turn moves the counterweight vertically down by 0.30 m. Use g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg.

What is the magnitude of the decrease in the counterweight's gravitational potential energy?

[1]
A

180 J180\ \mathrm{J}180 J

B

1800 J1800\ \mathrm{J}1800 J

C

600 J600\ \mathrm{J}600 J

D

36 J36\ \mathrm{J}36 J

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3 Conservation of energy Questions

  1. GCSE
  2. /Physics
  3. /3 Conservation of energy

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