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A satellite is lifted from earth to a height h . Let the work done by the external agent be W1. Then it is projected with a speed v so as to move in a circular orbit doing an extra work W2. Compare these works done.
02
Oct
A satellite is lifted from earth to a height h . Let the work done by the external agent be W1. Then it is projected with a speed v so as to move in a circular orbit doing an extra work W2. Compare these works done. Find the percentage cahnge in the acceleration due to [...]
A ship of mass 3 * 10 ^7 kg, initially at rest, is pulled by a force of 5 * 10^4 N through a distance of 3 m. Assuming that the resistance due to water is negligible, the speed of the ship is
02
Oct
A ship of mass 3 * 10 ^7 kg, initially at rest, is pulled by a force of 5 * 10^4 N through a distance of 3 m. Assuming that the resistance due to water is negligible, the speed of the ship is A ship of mass 3 * 10 ^7 kg initially at rest [...]
The pulley arrangements in Fig. 7.357 (a) and Fig. 7.360(b) are identical. The mass of the rope is negligible. In Fig. 7.361 (a), the mass m is lifted up by attaching a mass 2m to the other end
02
Oct
The pulley arrangements in Fig. 7.357 (a) and Fig. 7.360(b) are identical. The mass of the rope is negligible. In Fig. 7.361 (a), the mass m is lifted up by attaching a mass 2m to the other end the mass m is lifted up by attaching a mass 2m to the other end The pulley [...]
A satellite of mass m moves in a circular orbit of radius r around the earth. Calculate the total energy required to place the satellite in the orbit from the earth’s surface. Assuming initially it to be at rest.
02
Oct
A satellite of mass m moves in a circular orbit of radius r around the earth. Calculate the total energy required to place the satellite in the orbit from the earth’s surface. Assuming initially it to be at rest. Find the percentage cahnge in the acceleration due to gravity when a small body is taken [...]
When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion.
02
Oct
When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion. the frictional force exerted by the surface on the person is opposite to the direction of his motion. When a person walks on a rough surface October 2, 2020 [...]
A simple pendulum with a bob of mass m swings with an angular amplitude of 40. When its angular displacement is 20, the tension in the string is greater than mg cos 20.
02
Oct
A simple pendulum with a bob of mass m swings with an angular amplitude of 40. When its angular displacement is 20, the tension in the string is greater than mg cos 20. A simple pendulum with a bob of mass m swings with an angular amplitude of 40. When its angular displacement is 20 [...]
A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5 m/s^2, the frictional
02
Oct
A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5 m/s^2, the frictional A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of [...]
A block A, of weight W, slides down an inclined plane S of slope 37 at a constant velocity, while the planck B, also of weight W, rests on top of A. The plank B is attached by a cord to the top of the plane
02
Oct
A block A, of weight W, slides down an inclined plane S of slope 37 at a constant velocity, while the planck B, also of weight W, rests on top of A. The plank B is attached by a cord to the top of the plane A block A also of weight W of weight [...]
A rod AB of length 2 m is hinged at point A and its other end B is attached to a platform on which a block of mass m is kept. Rod rotates about point A maintaining angle theta = 30
02
Oct
A rod AB of length 2 m is hinged at point A and its other end B is attached to a platform on which a block of mass m is kept. Rod rotates about point A maintaining angle theta = 30 A rod AB of length 2 m is hinged at point A and its [...]
A block A of mass m is placed over a plank B of mass 2 m. Planck B is placed over a smooth horizontal surface. The coefficient of friction between A and B is 0.4. Block A is given a velocity v0 towards
02
Oct
A block A of mass m is placed over a plank B of mass 2 m. Planck B is placed over a smooth horizontal surface. The coefficient of friction between A and B is 0.4. Block A is given a velocity v0 towards a situation is depicted each of which is in vertical plane. The [...]