Rotational Velocity & Acceleration Video Lessons

Concept

# Problem: A record rotates on a turntable at 33 rpm.Part AWhat is the angular speed in rad/s?Express your answer using two significant figures.ω =rad/sPart BWhat is the period of the motion?Express your answer to two significant figures and include the appropriate units.T =

###### FREE Expert Solution

A)

Angular speed,

$\overline{)\begin{array}{rcl}{\mathbf{\omega }}& {\mathbf{=}}& \mathbf{2}\mathbf{\pi }\mathbf{N}\end{array}}$

N = 33 rev / min (1 min / 60 s) = 33/60 rev /s

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###### Problem Details

A record rotates on a turntable at 33 rpm.

Part A

What is the angular speed in rad/s?

ω =

Part B

What is the period of the motion?

Express your answer to two significant figures and include the appropriate units.

T =