GATE Mechanical Engineering (ME) 2016 Shift 2 Solved Paper

The forces F₁ and F₂ in a brake band and the direction of rotation of the drum are as shown in the figure. The coefficient of friction is 0.25. The angle of wrap is 3π/2 radians. It is given that R = 1 m and F₂ = 1 N. The torque (in N-m) exerted on the drum is ______