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Block A has a mass of 30 kg and block B a mass of 15 kg. The coefficients of friction between all surfaces fo contact are mu s = 0.15 and mu k = 0.10. Knowing that theta = 30 and that the magnitude Block A has a mass of 30 kg and block B [...]

Two blocks, with masses m1 and m2, are stacked as shown in Fig. 7.241 and placed on a frictionless horizontal surface. There is a friction between the two blocks. An external force of magnitude F is applied are stacked as shown in Fig. 7.241 and placed on a frictionless horizontal surface. There is a friction [...]

Block A as shown in Fig. 7.240 weighs 1.40 N, and block B weighs 4.20 N. The coefficient of kinetic friction between all surfaces is 0.30. Find the magnitude of the horizontal force necessary and block B weighs 4.20 N. The coefficient of kinetic friction between all surfaces is 0.30. Find the magnitude of the [...]

A block of mass m = 4 kg is placed over a rough inclined plane as shown in Fig. 7.239. The coefficient of friction between the block and the plane is mu = 0.5, A force F = 10 N is applied on the block at an angle of 30 A block of mass m [...]

A child is swinging a ball of mass M around on a light spring which has spring constant k. The ball describes a horizontal circle. The stretched spring has a length l and makes an angle theta with the vertical A car is moving with uniform speed over a circular bridge of radius R which [...]

A table with smooth horizontal surface is fixed in a cabin that rotates with a uniform angular velocity omega in a circular path of radius R. A smooth groove AB of length L ( <<R ) is made on the surface A car is moving with uniform speed over a circular bridge of radius R [...]

A circular table with smooth horizontal surface is rotating at an angular speed omega about its axis. A groove is made on the surface along a radius, and a small particle is gently placed A circular table with smooth horizontal surface is rotating at an angular speed omega about its axis. A groove is made [...]

A small wedge whose base is horizontal is fixed to a vertical rod as shown in Fig. 7.197. The sloping side of the wedge is frictionless and the wedge is spun with a constant angular speed omega about vertical axis A car is moving with uniform speed over a circular bridge of radius R which [...]

There are two blocks of masses m1 and m2. m1 is placed on m2 on a table which is rotating with an angular velocity omega about the vertical axis. The coefficients of friction between the blocks There are two blocks of masses m1 and m2. m1 is placed on m2 on a table which is [...]

A disc of radius R rotates from rest about a vertical axis with a constant angular acceleration such that a coin placed at the periphery of the disc moves with a tangential acceleration a A disc of radius R rotates from rest about a vertical axis with a constant angular acceleration such that a coin [...]