Tut says please help, will rate thank you so much You set a small eraser at a di

Question

Tut says please help, will rate thank you so much

You set a small eraser at a distance of 0.19 m from the center of a turntable you find in the attic and establish that when the turntable is turned on, the eraser travels in a circle with a constant tangential speed of 0.75 m/s. If your desk lamp projects a shadow of the apparatus on a wall which is the same size as the real apparatus, determine the following for the oscillatory motion of the eraser's shadow.

(a) period
s

(b) amplitude
m

(c) maximum speed
m/s

(d) magnitude of the maximum acceleration
m/s2

Explanation / Answer

a)

w = 0.75/0.19 = 3.95

T = 2*pi/w = 1.592 s

b)

A = 0.19 m

c)

Vm = 0.75 m/s

d)

a = A*w^2 = 0.19*3.95^2 = 2.964 m/s^2

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