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
ΔV=GMmR−GMmR+(R/5)=GMm6R=GMR2×mR6=mgR6 ∵GMR2=g=mg(5h)6=56mghTalk to our academic expert!
Similar Questions
The masses, each of mass m are kept on the vertices of an equilateral triangle of side a. Find the work needed to be done to change the length of the triangle twice of its original value.
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