Escape velocity of a body depends upon
Correct answer: D. both (b) and (a)
- A. mass of body
- B. mass of planet
- C. density of planet
- D. both (b) and (a)
Explanation
The escape velocity of a body depends on both the mass of the body and the mass of the planet. It is calculated using the formula ve =(GM/r)^1/2 , where G is the gravitational constant, M is the mass of the planet, and r is the distance from the center of the planet to the point where the escape velocity is being calculated.Incorrect Options Explanation:(a) mass of body: The mass of the body affects the escape velocity, but it is not the only factor.(b) mass of planet: The mass of the planet affects the escape velocity, but it is not the only factor.(c) density of planet: The density of the planet does not directly affect the escape velocity.
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Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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