Mechanical Energy of Earth-Moon System – Rankers Physics
Topic: Gravitation
Subtopic: Planet and Satellite

Mechanical Energy of Earth-Moon System


Assertion (A): The mechanical energy of earth-moon system remains same when a heavenly body passes nearby the earth-moon system.
Reason (R): Force exerted by heavenly body on the earth-moon system is non-conservative.
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

Assertion (A) is false:


An external heavenly body exerts a gravitational force on the Earth-Moon system, causing its mechanical energy to change.


Reason (R) is false: Gravitational force is a conservative force by nature. Therefore, both Assertion (A) and Reason (R) are false.

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