The lug nuts on a car wheel require tightening to a torque of 90 N ∙ m.If a 30-cm long wrench is used,what is the magnitude of the minimum force required using the wrench?
A)300 N
B)150 N
C)30 N
D)15 N

Question

Quizplus · Accepted Answer

The formula for torque is T = F x d, where T is torque, F is force, and d is the lever arm (distance from the axis of rotation to where the force is applied). Rearranging the formula to solve for force, we get F = T/d. 
Substituting the values, we get F = 90 N ∙ m / 0.3 m = 300 N. Therefore, the minimum force required using the wrench is 300 N.

The Lug Nuts on a Car Wheel Require Tightening to a Torque