A particle is released from a height H . At certain height its kinetic energy is two times its potential energy. Height and speed of particle at that instant are

Question

A particle is released from a height H . At certain height its kinetic energy is two times its potential energy. Height and speed of particle at that instant are, H 3 , 2 g H 3, H 3 , 2 g H 3, 2 H 3 , 2 g H 3, H 3 , 2 g H

MARKS App · Accepted Answer

∴ K + U = m g H & K = 2 U ∴ 2 U + U = m g H ⇒ U = m g H 3 ⇒ m g h = m g H 3 ⇒ h = H / 3 ∴ 1 2 m v 2 = 2 U = 2 m g H 3 ⇒ v = 2 g H 3

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