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Q: When the direction of the force applied and the direction of movement of the object is perpendicular to each other.
  • A. Power exercised
  • B. No work done
  • C. Power not exercised
  • D. Work done
Correct Answer: Option B - If the direction of the force is perpendicular to the displacement in the direction of motion of the object then, θ = 90⁰ Work done = F.d cos 90⁰ W = 0
B. If the direction of the force is perpendicular to the displacement in the direction of motion of the object then, θ = 90⁰ Work done = F.d cos 90⁰ W = 0

Explanations:

If the direction of the force is perpendicular to the displacement in the direction of motion of the object then, θ = 90⁰ Work done = F.d cos 90⁰ W = 0