A plumber must apply a torque of to loosen a threaded pipe fitting
PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A plumber must apply a torque of 45N⋅m to loosen a threaded pipe fitting. She has a straight wrench whose handle is 0.25m long.
(a) Assuming she can pull perpendicular to the handle, determine the minimum force she must exert. Give your answer in newtons.
(b) The plumber estimates that she can comfortably exert no more than 120N of force. If space constraints still allow her to pull perpendicular to the handle, calculate the minimum handle length her wrench would need in order to achieve the required torque with this force limit.