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Instant Notes Earth is not a perfect sphere. Earth is flat at the poles and it is bulged a Hence the polar radius is lesser than the equatorial radius by . greater at the Polar Regions than at the equatorial regions. Cravitational potential potential. Ans: Gravitational potential at a point is defined as the amount of work donsi unit mass from the point to infinity against the gravitational field. Ifs quantity. Its unit is .
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We sometimes encounter examples where a large force acts for very short duration of time producing an appreciable and finite change in linear momentum of the body. Such forces are know as impulsive forces. As an example, consider two identical cricket balls of mass and initial speed , approaching a rigid wall. One ball strikes the wall normally and rebounds with same speed. Another ball strikes the wall making and angle of from normal and is elastically reflected back as shown in figure. Now answer the following questions.
The force exerted on the wall by ball I and ball II is
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Question Text | Instant Notes
Earth is not a perfect sphere. Earth is flat at the poles and it is bulged a Hence the polar radius is lesser than the equatorial radius by . greater at the Polar Regions than at the equatorial regions.
Cravitational potential potential.
Ans: Gravitational potential at a point is defined as the amount of work donsi unit mass from the point to infinity against the gravitational field. Ifs quantity. Its unit is .
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Updated On | Feb 8, 2023 |
Topic | Gravitation and Fluid |
Subject | Physics |
Class | Class 11 |
Answer Type | Video solution: 1 |
Upvotes | 56 |
Avg. Video Duration | 11 min |