The rotational analogue of force is moment of force, also called torque. a) The turning effect of force is maximum when the angle between R and F is.

b) A wheel starting from rest acquires an angular velocity of 10 rad/s in two seconds. The moment

of inertia of the wheel is 0.4 kg m 2 . Calculate the torque acting on it.

c) The possibility of falling backward with the ladder is more when you are high up on the ladder

than when you just begin to climb. Explain why.