A 0.50 m long bar is rotated horizontally about one end while a string pulls on the…
PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A 0.50 m long bar is rotated horizontally about one end while a string pulls on the free end with a constant 12 N force. As the bar extends outward, the angle between the string and the bar decreases uniformly from 90° at r = 0.10 m to 60° at r = 0.50 m. Predict whether a graph of torque magnitude versus radial distance over this interval would be linear, concave upward, or concave downward, and explain the physical reason for the shape you identify.