I need some help with these please explain Arigid wlheelal radius rrotates about

Question

I need some help with these please explain
Arigid wlheelal radius rrotates about an axis theouch center and perpendioAar d the wheel during a oertain interval of time M rim locations and c on two dinerent wokes of the wheel at a asta r/2 tom the center, consider the retator whoh at the folowing true regarding the angular ea the same time interval O Aa three points have the same engular velodtyasal three paints heve the same angulor aeplacement points ansc wal have the anguar velodry of point A as they ae at the distanou from the center of the wheol compared to A. (b) which of the folowing is true regarding tangentii ipeedT points ave the tangertilso as a three points have the same arge placemen* time ketanval M. greater tangmisel as t further away from the center the wheel O Point Ahan (e) which of the toaowing is trua regarding centripensi accelerarsene csekct al that ap same arouk daplacementointhe same time in M. O Al three point have the same centrteta acceleration as allthree pointshave the O Points Band c wtllhavo half the oeleration of pointA as they are at har the distante for the center a

Explanation / Answer

In a circular motion all particle will rotate through same angle

anglar velocity w = angle rotated / time

(a)

All three points have same angular velocity

=======================================

tagential velocity

vA = r*w

VB = Vc = r/2*w

(b)

option (2)

=============================

centripetal acceleration

for point A

aA = r*w^2

for point B

aB = r/2*w^2 = aA/2

for point c

ac = r/2*w^2 = aA/2

(c)

option (2)

===========================

centripetal acceleration is perepndicular to velocity

(a)

direction is along (8)

(b)

when the string breaks the ball moves in the direction of V

direction is along (2)

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