In this problem, the pulley has a significant mass. Because the pulley has a 2 points Eignificant mass, how will this affect the acceleration of the 3 kg box?
Assume Vo is zero.
I=1/2mr?
m=1.1 kg
r= 0.4m
3 kg

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?