Question

The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 50 Nm . You plan to tighten the plugs by pulling on the end of a 29-cm-long wrench. Because of the cramped space under the hood, you'll need to pull at an angle of 105 ∘ with respect to the wrench shaft.

With what force must you pull?

Express your answer using two significant figures.

Answer 1

here,

torque , t = 50 Nm

length of wrench , L = 29 cm

L = 0.29 m

angle , theta = 105 degree

let the force be F

r X F = T

0.29 * F *sin(105) = 50

F = 178.5 N

the force must be pulled is 178.5 N