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A satellite of mass 500 kg us in an approximately cultist orbit around Earth with a period of 1.5 hours. What is its height h above the Earth’s surface and what is the gravitational potential energy?

A satellite in Earth orbit has a mass of 99 kg and is at an altitude of 2.01 x 10° m. (Assume that U = 0 as r → o.) (a) What is the potential energy of the satellite-Earth system? (b) What is the magnitude of the gravitational force exerted by the Earth on the satellite? N (c) What force, if any, does the satellite exert on the Earth? (Enter the magnitude of the force, if there is no force enter 0.) N

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A satellite in Earth orbit has a mass of 105 kg and is at an altitude of 1.95 x 10° m. (Assume that U = 0 as r → ∞.) (a) What is the potential energy of the satellite-Earth system? (b) What is the magnitude of the gravitational force exerted by the Earth on the satellite? (c) What force, if any, does the satellite exert on the Earth? (Enter the magnitude of the force, if there is no force enter 0.)

A small sphere of mass m is launched horizontally over a body of water from a height h above the water and with a launch speed v0. Determine expressions for the following in terms of m, v0, h, and g. Air resistance is negligibly small.   (a) W is the amount work done by the force of gravity on the projectile during its flight.   (b) ΔKE is the change in kinetic energy ΔKE of the projectile from the time it was fired until it hits the water.    (c) KEf is the final kinetic energy KEf of the projectile as it hits the water.

How would you have to adjust the starting height to have the same amount of energy among the Earth, Moon, and Jupiter?

Choose the correct answer A mass m placed at a height h from the ground has a gravitational potential energy PE, (with respect to the ground). If the mass is doubled and the height is halved (m' = 2m and h' = 0.5h) , then the new gravitational potential energy PE, (with respect to the ground) is: Unchanged (x1) Quadrupled (x4) Halved (x0.5) Quartered (x0.25) Doubled (x2)

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(a) A block of mass m is moved from the surface of the Earth to a height h as shown in diagram (a). Derive an expression for the change of potential energy of the block near the surface of the Earth. T m Diagram (a) ZG (b)A block of mass 2.0 kg moves with a velocity v towards a spring as shown in diagram (b). 000000000 Diagram (b) The block compresses the spring by 2.0 cm as shown in diagram (c). Given that the force constant of the spring is 1000 N m¹¹. Calculate the velocity, v of the block if (i) the surface is smooth. v=0 2.0 cm Diagram (c) (ii) the surface is rough and the frictional force between the block and the surface is 3.0 N.