spacacraft ls n empty spaca t carries on board a o cecope with a moment or nerti

Question

spacacraft ls n empty spaca t carries on board a o cecope with a moment or nerti; at 20.5 kg m about tha ao s at the qvrascope Tha moment tin t a cr ha s acecraft around the same ads ls 5.co kn m Neither the snacac at nar tha qYmscape ls ari inally Need Help? Show My Work optera 6. +- points SerPSET9 11 P043. My N angular momentum vector of recessi gyroscope s eeps out a cone as sho n in the fi ure bel The a ular S ed of th@ tip of the angular mo entum vector, caled its recessional frequency, s given by T where is the magnitude of the torque on th 9yroscope and causing this precessicn Need Help?Pd -Show My Work '

Explanation / Answer

5.

Since total angular momentum of system is conserved, So

Li = Lf

0 = I1*w1 + I2*w2

I1*w1 = -I2*w2

Using given values:

w2 = 20.5*120/(5*10^5) = 0.00492 rad/sec

Now we know that

w = theta/time

time = theta/w

time = (21*pi/180)/0.00492

time = 74.5 sec

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