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An electric motor rotating a workshop grinding wheel at a rate of 100rev/min is switched off. Suppose the wheel has a constant negative angular acceleration of magnitude 2.40 rad/s2.
(a) Determine how long does it take for the grinding wheel to stop?
s
(b) Determine through how many radians has the wheel turned during the interval found in (a)?
rad
Three identical masses of 340 kg each are placed on the x axis. One mass is at X1 = -120cm, What is the direction of the net gravitational force on the mass at the origin due to the other two masses
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