Given: A ball of mass I kg is released from rest at A. and rolls down a quarter cirole . until point B. The ball leaves pont B with a horizartal velocity vB and undergoes projectile motion; At pirnt C the harizantal and the point of impact lasts t= 0.005 Secands. Ignoring air resistance and assuming the work done by from A to B is -20 U. Find: work dane by gravity on ball • Net work done by all farces on the boll from A-B • VB fristion A 5m
Given: A ball of mass I kg is released from rest at A. and rolls down a quarter cirole . until point B. The ball leaves pont B with a horizartal velocity vB and undergoes projectile motion; At pirnt C the harizantal and the point of impact lasts t= 0.005 Secands. Ignoring air resistance and assuming the work done by from A to B is -20 U. Find: work dane by gravity on ball • Net work done by all farces on the boll from A-B • VB fristion A 5m
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Transcribed Image Text:Given: A ball of mass I kg is released from rest at A. and rolls down a
quarter cirole .Until point B. The ball leaves pont B with a
horizartal velocity VB and undergoes projectile motion; At pirnt c
the player nits' the ball with å force of 1000 N,45° above
the harizantal and the point of impoct lasts t= 0.005 Secands.
Ignoring air resistance and assuming the work done by
from A to B is -20 J.
Find: work dane by gravity on bal
• Net work done "by all farces on
the boll from A-B
VB
* Velocty at C
Initial / final linear mamentunm
Time it takes ball to reach ployer
*time it takes boll to reach groid
after C.
friction
A
ym=Ikg
5m
5m
Point of impact
t=0.005 sec)
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