modern physics

a record player is switched from 33rpm to 45rpm.The artable changes speed in 2.0s.Calaculate its average angular acceleration and the average tangential acceleration of a point on the turnable that 15cm from the axis rotation.

Why are you posting in multiple names? Please don't do that.

avgangacceleration=changevelocity/time units are rad/sec^2

Tangental acceleration=angacceleration*radius
units are m/s^2

oh its for my friend so i use her name..and sorry never happens again

thanks for helping us

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asked by mich

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