A very small coin is at distance 11 cm from the spindle of a turntable. The turn

Question

A very small coin is at distance 11 cm from the spindle of a turntable. The turntable starts spinning from rest with constant angular acceleration. In 0.143 s the coin's centripetal acceleration is 1.54 times its tangential acceleration.

1)

Find the turntable's angular acceleration.

rad/s2

Your submissions:

1.836

Computed value:

1.836

Submitted:

Friday, March 6 at 3:17 PM

Feedback:

2)

Find the angle by which the turntable turns in 0.143 s.

rad

3)

Find the magnitude of the coin's linear acceleration in 0.143 s.

m/s2

Explanation / Answer

Angular acceleration is 1.836 rad/s^2

angle = 1/2 * 1.836 * (0.143)^2 = 1.03 degrees

3)w=v/r

v=wr

=1.836*0.055

=0.1m/sec

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