Question 1121. In order to double the period of simple pendulum, the length of the string should be

Question 1122. The maximum efficiency of a screw jack is

Question 1123. The impact between two lead spheres is approximately equal to an __________ impact.

Question 1124. The total motion possessed by a body, is called

Question 1125. A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

Question 1126. The maximum acceleration of a particle moving with simple harmonic motion is

Question 1127. When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

Question 1128. Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then

Question 1129. According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then

Question 1130. The motion of a particle round a fixed axis is