A weight W is tied to two strings passing over tha frictionless pulleys A and B as shown in the figure. If weights P and Q move downwards with speed v, the weight W at any instant rises with the speed `:`

A slightly loosely fit window is balanced by two strings which are connected to weights w//2 each. The strings pass over the frictionless pulleys as shown in the figure. The strings are tied almost at the corner of the window. The string on the right is cut and then the window accelerates downwards. If the coefficients of friction between the window and the side supports is mu then calculate the acceleration of the window in terms of mu , a, b and g, where a is width and b is the length of the window.

Two blocks of masses of 40 kg and 30 kg are connected by a weightless string passing over a frictionless pulley as shown in the figure.

Two blocks of masses of 40 kg and 30 kg are connected by a weightless string passing over a frictionless pulley as shown in the figure.

Three weights are hanging over a smooth fixed pulley as shown in the figure. What is the tension in the string connecting weights B and C ?

Three weights are hanging over a smooth fixed pulley as shown in the figure. What is the tension in the string connecting weights B and C ?

Three equal weight A,B and C of mass 2kg each are hanging on a string passing over a fixed frictionless pulley as shown in the figure. The tension in the string connecting weights B and C is approximately

Three equal weight A,B and C of mass 2kg each are hanging on a string passing over a fixed frictionless pulley as shown in the figure. The tension in the string connecting weights B and C is approximately

A uniform sphere of weight W and radius 3 m is being held by a frictionless wall as shown in the figure. The tention in the string will be:

A uniform sphere of weight W and radius 3 m is being held by a frictionless wall as shown in the figure. The tention in the string will be: