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2 Motion and forces

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Question 64

A stage platform of mass 400 kg is initially stationary. Its weight is 4000 N and the tension in its vertical cable is initially 4000 N. The tension is increased to 4200 N for 2.0 s. The tension is then reduced to 4000 N while the platform is moving. Ignore all other forces.

a.

Calculate the speed of the platform just before the tension is reduced.

[3]
b.

Explain how the platform moves after the tension is reduced.

[2]
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2 Motion and forces Questions

  1. GCSE
  2. /Physics
  3. /2 Motion and forces

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