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January 30, 2015

January 30, 2015

Posted by **David** on Saturday, March 29, 2014 at 11:19am.

- Physic Angular momentum and torque -
**Damon**, Saturday, March 29, 2014 at 11:32amr = 0.19 m

I =.5 m r^2 =.5 (1)(.19)^2 = .0181 kg m^2

1700 rev/min * 1 min/60 s * 2 pi rad/rev

= 178 radians/second = omega

L =I * omega .0181 * 178 = 3.22 kg m^2/s

final omega = initial omega - alpha t

alpha (4.6) = -178

alpha = - 38.7 radians/s^2

Torque = I alpha = -.0181 (38.7)

= - 0.7 kg m^2/s^2 = -0.7 Newton meters

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