A body falling from height of 10 cm rebounds from hard floor if it loses20%energy in the impact then co efficient of restitution is
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hello.... ☺
h = 10m
mgh = 10mg
KE = 0
Total Energy (TE) = 10mg
PE = 0
KE = TE ➖ PE = 10mg
energy lost = 20% of 10mg
= 2mg
Total Energy Left (TE)
= 10mg ➖ 2mg = 8mg
max height = H
KE = 0
PE = mgH
PE = TE = 8mg
so
mgH = 8 mg
or H=8m
thank you ☺
h = 10m
mgh = 10mg
KE = 0
Total Energy (TE) = 10mg
PE = 0
KE = TE ➖ PE = 10mg
energy lost = 20% of 10mg
= 2mg
Total Energy Left (TE)
= 10mg ➖ 2mg = 8mg
max height = H
KE = 0
PE = mgH
PE = TE = 8mg
so
mgH = 8 mg
or H=8m
thank you ☺
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