Questions
A body of mass m rises to height h = R/5 from the earth's surface, where R is earth's radius. If g is acceleration due to gravity at earth's surface, the increase in potential energy is
detailed solution
Correct option is C
ΔU=mgh1+h/R Substituting R=5h we get ΔU=mgh1+1/5=mgh5+15=56mghTalk 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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