passwella.
Menu

JAMB Physics 1993 Question 9

Question 9

Simple Machines

A plane inclined at angle θ has a velocity ratio of 10 : 1. The inclination of the plane to the horizontal is given by

  1. A.tan θ = 1/10
  2. B.cot θ = 1/10
  3. C.cos θ = 1/10
  4. D.sin θ = 1/10
Show the answer and explanation

Answer: D (sin θ = 1/10)

Explanation

For an inclined plane, V.R. = length of slope ÷ height = 1/sin θ. So 1/sin θ = 10 and sin θ = 1/10.