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Consider 2 balls A and B of the same mass. The potential energy of ball A is thrice that of ball B. How high is ball A compared to ball B?(a) Same height as ball B(b) Twice as high height as ball B(c) Thrice as high height as ball B(d) Four times as high height as ball BThis question was posed to me in a national level competition.My doubt stems from Potential Energy topic in division Work, Energy and Power of Physics – Class 11

Answer»

The correct choice is (c) Thrice as HIGH height as ball B

Explanation: PEa = (m x g x h) a

PEb = (m x g x h) b

ma = MB = m

GA = gb = g

PEa = 3 x PEb

ma x ga x ha = mb x gb x hb x 3

m x g x ha = m x g x hb x 3

ha = 3 x hb.



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