The bobof mass50 gm of a pendulumis released from a horizontal position A as shownin the figure ..If the lengthof the pendulumis1.5 m , what is itskinetic energyat the lowermostpointB ? (g = 10 m/(s^(2)))

The bobof mass50 gm of a pendulumis released from a horizontal positio

1.	The bobof mass50 gm of a pendulumis released from a horizontal position A as shownin the figure ..If the lengthof the pendulumis1.5 m , what is itskinetic energyat the lowermostpointB ? (g = 10 m/(s^(2)))
Answer» `2.5 xx10^(-11)` J `15 xx10^(-1) J ` `5XX10^(-1) J ` `7.5 xx10^(-1) J ` SOLUTION :Potential energy of a bob of pendulum at pointA = K.E of bob at POINT B ` :. ` K.E of bob at `B(1/2 MV^(2)) = MGH ` ` = 50 xx10^(-3) xx10 xx1/5` `= 7.5 xx10^(-1) J `