Earth revolves about sun in an elliptical orbit with mean radius 9.3 × {10^7},m in a period of 1 ye

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7.Gravitation

easy

The earth revolves about the sun in an elliptical orbit with mean radius $9.3 \times {10^7}\,m$ in a period of $1$ year. Assuming that there are no outside influences

A

The earth's kinetic energy remains constant

B

The earth's angular momentum remains constant

C

The earth's potential energy remains constant

D

All are correct

Solution

(b) Kinetic and potential energies varies with position of earth w.r.t. sun. Angular momentum remains constant every where.

Standard 11

Physics

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