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guru
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A disk 8.0 cm in diameter is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at [tex]600rad/s^2 [/tex] for .5s, then coasts at a steady angular velocity for another .5s.
What is the speed of the dot at t = 1 s?
Through how many revolutions has it turned?
I approached the first question by drawing a graph of the angular acceleration Vs. time. I then obtained the angular velocity by finding the area under the graph.
I then used the formula V=rw to get the speed.
I obtained 24m/s as my final result.
Is this reasonable?
What is the speed of the dot at t = 1 s?
Through how many revolutions has it turned?
I approached the first question by drawing a graph of the angular acceleration Vs. time. I then obtained the angular velocity by finding the area under the graph.
I then used the formula V=rw to get the speed.
I obtained 24m/s as my final result.
Is this reasonable?
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