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A circular road of radius 1000 m has banking angle 45. The maximum safe speed ( in m/s) of a car having a mass 2000 kg will be ( if the coefficient of friction between tyre and road is 0.5) A circular road of radius 1000 m has banking angle 45. The maximum safe speed [...]

A vehicle is moving with a velocity v on a curved road of width b and radius of curvature R. For counteracting the centrifugal force on the vehicle, the difference in elevation required in between the outer A vehicle is moving with a velocity v on a curved road of width b and radius of [...]

A chain of length L is placed on a horizontal surface as shown in Fig. 7.282. At any instant x is the length of chain on rough surface and the remaining portion lies on smooth surface. Initially x = 0. In Fig. 7.278 the blocks are at rest and a force of 10 N acts [...]

Two blocks of masses 0.2 kg and 0.5 kg, which are placed 22 m apart on a rough horizontal surface (muon = 0.5), are acted upon by two forces of magnitude 3 N each as shown in Fig. are acted upon by two forces of magnitude 3 N each as shown in Fig. Two blocks [...]

Three blocks A, B, and C of equal mass m are placed one over the other on a frictionless surface (table) as shown in Fig. 7.280. The coefficient of friction between any blocks A, B, and C is muon. and C is muon. and C of equal mass m are placed one over the other [...]

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

In Fig. 7.278, the blocks are at rest and a force of 10 N acts on the block of 4 kg mass. The coefficient of static friction and the coefficient of kinetic friction are mu s = 0.2 and mu k = 0.15 In Fig. 7.278 the blocks are at rest and a force of [...]

A block of mass m is lying on a wedge having inclination angle alpha = tan / (1/5). Wedge is moving with a constant acceleration a = 2 m/s^2. The minimum value of coefficient of friction mu so that m remains In Fig. 7.272 the tension in the rope ( rope is light ) is [...]

A solid block of mass is resting inside a cube as shown in fig. 7.276. The cube is moving with a velocity v = 5i + 2j m/s. If the coefficient of friction between the surface of cube and block is 0.2, A solid block of mass is resting inside a cube as shown in [...]

A horizontal force of 25 N is necessary to just hold a stationary against a wall. The coefficient of friction between the block and the wall is 0.4. The weight of the block is A horizontal force of 25 N is necessary to just hold a stationary against a wall. The coefficient of friction between [...]