Question

Energi mekanik , kinetik , potensial

At her highest point,a girl on a swing is 2m from ground.While at her lowest point is 1m from the ground.Find maximum speed!

Answer 1

EM1=EM2; di posisi 1 atau tertinggi hanya punya energi potensial, pd posisi 2
punya ep dan ek
mgh=mgh+1/2 mv^2; m bs dicoret.
nanti akan ketemu v = 2√5 m/s