Consider a slider crank mechanism. The length of the links are 0.2 m each. The coupler link 2 has a mass of 0.5 kg and is a slender rod. The slider (3) has a mass of 0.1 kg and a coefficient of friction of 0.15 between the slider and the slot. The crank link 1 has no mass. At the instant, 01= 45°. What is the torque that the motor needs to apply to crank 1 so that it rotates with a constant speed of 60 rpm