A pendulum bob has its maximum speed as 5m/s at lowest position o. Calculate the height of the Bob above o,where its velocity is zero.

Question

A pendulum bob has its maximum speed as 5m/s at lowest position o. Calculate the height of  the Bob above o,where its velocity is zero.

Scott · Answer

1/2 m v^2 = m g h h = v^2 / (2 g)

Lee · Answer

Vi=5.0m/s upwarrd vf=0.0m/s a=-9.8m/s/s d=? Vf2=Vi2+2ad d=(Vf2-Vi2)÷2a =25÷（2x9.8）=1.27m