Wednesday

April 23, 2014

April 23, 2014

Posted by **sanjeev kumar** on Wednesday, August 1, 2012 at 3:34am.

- Dynamics -
**Ajayb**, Wednesday, August 1, 2012 at 6:47amWi= 1200 rev/min = 20 rev/sec

= 20*2*pi rad/sec

Wf = 0; alpha= -1.5 rad/s^2

Wf = Wi + alpha*t

0 = 40*pi - 1.5*t

t = 40*pi/1.5 = 84 sec

Now,

theta = Wi*t + (1/2)*alpha*t^2

Plug in the values in this eqn. to get theta - the rotation of the wheel (in radians)before it comes to halt. Divide the result by 2*pi to convert into no. of revolutions.

- Dynamics -
**Rajan**, Saturday, August 11, 2012 at 5:48pmPlease help me to elaborate the answer as i tried but couldn't

**Related Questions**

Physics - A flywheel with a diameter of 2.45 m is rotating at an angular speed ...

physics - The flywheel of a steam engine runs with a constant angular speed of ...

physics - The flywheel of a steam engine runs with a constant angular speed of ...

Physics - The angular speed of an automobile engine is increased at a constant ...

Physics - A passenger bus in Zurich, Switzerland derived its motive power from ...

Dynamics - A flywheel has an angular speed of 1200 rev/min when its motor is ...

physic - hi,need help please.thank. A car is designed to get its energy from a ...

kinematics - An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick...

kinetics - An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick ...

kinetics - An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick ...