Saturday

February 28, 2015

February 28, 2015

Posted by **Lizzy** on Tuesday, October 30, 2012 at 1:24pm.

theta(t)= 258t - 20.4t^2 - 1.47t^3

How many revolutions does the motor shaft turn through between the time when the current is reversed and the instant when the angular velocity is zero?

- College Physics -
**Lizzy**, Tuesday, October 30, 2012 at 1:30pmI figured it out! I wasn't putting the t at omega=0 in the first equation in properly before converting from radians to revolutions!

**Answer this Question**

**Related Questions**

physics - 2. At time t =0, the current to the dc motor is reversed, resulting in...

science - At time t =0, the current to the dc motor is reversed, resulting in an...

science - Question: If you have an electric motor on a bench and hook it to the ...

Physics - The resistance of the wire in the windings of an electric starter ...

Physics - An electric motor has 72 turns of wire wrapped on a rectangular coil, ...

algebra - The power (P) required to run a motor is equal to the voltage (E) ...

Physics - An electronic motor is revolving at 2000rpm. After 3sec, it is moving ...

PHYSICS - Using the motor principle explain why a motor is rotating in the ...

physics - A 120-V motor has mechanical power output of 2.20 hp. It is 92.0% ...

physics - A 120-V motor has mechanical power output of 3.20 hp. It is 81.0% ...