A mechanic presses downward on the end of a horizontal crowbar that is long
PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A mechanic presses downward on the end of a horizontal crowbar that is 0.50m long. At the point of application, the force has horizontal and vertical components of 40N (to the right) and 30N (downward), respectively.
(a) Identify which component of the applied force contributes to the rotational effect about the pivot at the other end of the crowbar, and briefly justify your choice.
(b) Calculate the magnitude of the resulting torque about the pivot. Show your reasoning clearly.
(c) Express your numerical answer from part (b) in newton–centimetres.