Questions
The radius and mass of earth are increased by 0.5%. Which of the following statements are true at the surface of the earth
a
g will increase
b
g will decrease
c
Escape velocity will remain unchanged
d
Potential energy will remain unchanged
detailed solution
Correct option is B
g=GMR2,ve=2GMR and U=−GMmR∴g∝MR2,ve∝MR and U∝MRIf both mass and radius are increased by 0.5% then ve and U remains unchanged where as g decrease by 0.5%.Talk to our academic expert!
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A shell of mass M and radius R has a point mass m placed at a distance r from its centre. The gravitational potential energy U (r) vs r will be
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