A box with 50 marbles is at a height of 50m .if each marble weight 25kg how much potential energy does the box of marbles have
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solution: mass of one marble (m) =25kg
mass of box of 50 marbles (M) = 25×50=1250kg
gravitational potential energy of a system at height(h) 50m(we assume g=10m/s²) =Mgh
putting the values.
1250×10×50=625000J
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Answer:
potential energy= mgh
where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
potential energy= mgh
PE=25*10*50
PE=12500j
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