31) The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

32) The sliding pairs, turning pairs and screw pairs form lower pairs.

33) When a particle moves round the circumference of a circle of radius r with ? rad/s, then its maximum acceleration is ?²r.

34) The static friction

35) A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 1