N electric turntable 0.750 m in diameter is rotating about a fixed axis with an initial angular velocity of 0.250 rev/s and a constant angular acceleration of 0.900 rev/s2. (a) Compute the angular velocity of the turntable after 0.200 s. (b) Through how many revolutions has the turntable spun in this time interval

a)

b)

Explanation:

Given:

diameter of the table,

initial angular velocity of the table,

angular acceleration of the table,

a)

time of observation,

Now the angular velocity after the given time:

using equation of motion

where:

final angular velocity

b)

No. of revolutions made in the given time:

where:

initial revolution speed

the answer is 12 as i may remember

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