Posted by applebottom on Friday, December 10, 2010 at 11:14pm.
The average speed during acceleration is 37.5 rpm.
The time spent accelerating is
(75 rpm)*(2 pi/60 rad/s*rpm)/0.8 rad/s^2= 9.8 seconds = 1.63 min
The number of revolutions turned while accelerating is
37.5*1.63 = 6.12
Add to that the number of revolutions turned after the motor is disconnected. They should tell you if it remains at constant speed after that. Friction will tend to slow it down, and they provide no information on that
Related Questions
Science - At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a ...
Mechanics - At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a ...
Physics - At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a ...
Angular acceleration - A flywheel of 480 mm diameter is accelerated with an ...
physics - The flywheel of a steam engine begins to rotate from rest with a ...
physics - The flywheel of a steam engine runs with a constant angular speed of ...
physics - Some European trucks run on energy stored in a rotating flywheel, with...
Physics - A certain CD has a playing time of 76 minutes. When the music starts, ...
physics - An electric motor rotating a workshop grinding wheel at a rate of 9.80...
physics - A car engine accelerates at a constant rate from 170 rpm to 3050 rpm ...
For Further Reading
