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Q: The moment (M) of the force (P) acting on the body at a distance R from the axis of rotation is represented by
  • A. M = PR cosθ
  • B. M = PR sinθ
  • C. M = P × R cosθ
  • D. M = P + R sinθ
Correct Answer: Option B - : The moment of the force (P) acting on the body at a distance R from the axis of rotation is represented by M = PR sinθ. • The moment of the force about the axis of rotation by the application of the force on the body is given by the cross product of both. If the force is not perpendicular to the axis and making angle θ then cosine form of angle is used.
B. : The moment of the force (P) acting on the body at a distance R from the axis of rotation is represented by M = PR sinθ. • The moment of the force about the axis of rotation by the application of the force on the body is given by the cross product of both. If the force is not perpendicular to the axis and making angle θ then cosine form of angle is used.

Explanations:

: The moment of the force (P) acting on the body at a distance R from the axis of rotation is represented by M = PR sinθ. • The moment of the force about the axis of rotation by the application of the force on the body is given by the cross product of both. If the force is not perpendicular to the axis and making angle θ then cosine form of angle is used.