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Grade: 12th pass

                        

A body of mass m is projected at an angle θ to the horizontal with initial speed u. The mean power developed by the gravity over the time of the flight is :-

3 years ago

Answers : (1)

Saurabh Koranglekar
askIITians Faculty
8407 Points
							Displacement of the body is horizontal to the earth's surface butthe gravitational force is perpendicular to the displacement.
Hence the work done by the gravitational force on the body is zero, so is the averagepower; as power equals work upon time.
5 months ago
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