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Question
Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height above the ground. Which of the two has greater potential energy?
Solution
Body A Body B
P.`E_1`=`m_1`gh P.`E_2`=`m_2`gh
P.`E_1`=10×gh P.`E_2`=20 ×gh
As g is constant and h is the same in both the cases
Pe2 is greater than PE.
Hence, Potential energy of body B (more mass) is greater than the P.E. of body A.
Or
As the height of body A and is same and ‘g’ is constant, the body with greater mass i.e. body B has greater potential energy.
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