Which of the following changes would reduce the magnitude of the torque on a bolt by…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Which of the following changes would reduce the magnitude of the torque on a bolt by the greatest amount, assuming wrench length, force magnitude, or angle are altered individually and all other factors remain unchanged?
(a) Reducing the wrench length by 25%
(b) Changing the pulling angle from 90∘ to 30∘
(c) Changing the pulling angle from 90∘ to 60∘
(d) Reducing the force magnitude by 25%