Question Answers

In the arrangement shown in Fig. 7.252, mass of blocks A, B and C is 18.5 kg, 8 kg and 1.5 kg, respectively. The bottom surface of A is smooth, while coefficient of friction that between block A and C is muon 1 = 1/3 8 kg and 1.5 kg B and C is 18.5 [...]

In the arrangement shown in Fig. 7.251 pulleys are small light and frictionless, threads are inextensible and mass of blocks A, B, and C is m1 = 5 kg, m2 = 4 kg, and m3 = 2.5 kg, respectively. and C is m1 = 5 kg and m3 = 2.5 kg B In the arrangement [...]

A block of mass m is pressed against a wall which is moving with an acceleration a as shown in Fig. 7.250. If the block is pulled at an angle theta with downward vertical by a force F and it does not slide are stacked as shown in Fig. 7.241 and placed on a frictionless [...]

Four blocks are arranged on a smooth horizontal surface as shown in Fig. 7.249. The masses of the blocks are given (see the figure). The coefficient of static friction between the top and the bottom blocks is mu s. are stacked as shown in Fig. 7.241 and placed on a frictionless horizontal surface. There is [...]

Each of the three blocks in Fig. 7.248 has a mass of 10 kg. The coefficients of static and kinetic frictions at each surface of contact between the blocks are mu s = 0.3 and mu k = 0.2, respectively. The ground is smooth. Each of the three blocks in Fig. 7.248 has a mass [...]

A block with mass m1 is placed on an inclined plane with slope angle alpha and is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley A block with mass m1 is placed on an inclined plane with slope angle alpha and is connected to a [...]

Two blocks of masses m and M are connected by a chord passing around a frictionless pulley which is attached to a rotating frame, which rotates about a vertical axis with an angular velocity omega. Two blocks of masses m and M are connected by a chord passing around a frictionless pulley which is attached [...]

The masses of the blocks A and B are m and M. Between A and B there is a constant frictional force F, but B can slide frictionlessly on the horizontal surface. A is set in motion with velocity but B can slide frictionlessly on the horizontal surface. A is set in motion with velocity [...]

In Fig. 7.244, find the acceleration of m assuming that there is friction between m and M , and all other surface are smooth and pulleys light and mu = coefficient of friction between m and M. and all other surface are smooth and pulleys light and mu = coefficient of friction between m and [...]

Block A weighing 20 kg is placed on a smooth surface. Weight B of 2 kg is mounted on the block. The coefficient of friction between the block and the weight is 0.25. Calculate the acceleration Block A weighing 20 kg is placed on a smooth surface. Weight B of 2 kg is mounted on [...]