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JAMB Physics 1981 Question 10

Question 10

Simple Machines

An inclined plane of angle θ, acting as a simple machine, has a velocity ratio

  1. A.sin θ
  2. B.1/sin θ
  3. C.cos θ
  4. D.1/cos θ
  5. E.sin θ cos θ.
Show the answer and explanation

Answer: B (1/sin θ)

Explanation

Velocity ratio = distance moved along the slope ÷ height raised = L/(L sin θ) = 1/sin θ.