Question

1. A grindstone starts from rest and has a constant
angular acceleration of 3.0 rad/s. Find : (i) the
angular displacement, (ii) the angular speed, after 2.0
second.

solution
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Answer 1

solution:

angular acceleration =angular velocity

time

3=angular velocity

2

so.. angular velocity =6rad/s

angular velocity =angular displacement

time

6=angular displacement

2

angular displacement =12rads