How many revolutions does the object make during the first 4 s?
y axis is the angular (rotational) speed (w) as "rad/second" and x axis is time (t) as "second".
The motion is linear in the first two seconds as:
10 rad/s at t=1
20 rad/s at t=2
Then the angular (rotational) speed is constant (w=20 rad/s) for both t=3 and t=4.
here's the graph: http://i.imgur.com/fOkTl.png
How many revolutions does the object make during the first 4 s?
Homework Answers
If at t=1s, it is 10rads/s, then there are 5 turns
If at t=2s, it is 20rads/s, then there are 10 turns
At t=3s, it is 20rads/s, there are 10 turns
At t=4s, it is 20 rads/s, there are 10 turns
In total of 4s, there are 35 revolutions.
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