The 4.0 kg, uniform, horizontal rod in(Figure 1) is seen from the side. What is the gravitational torque about the point shown?
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A 250 g , 25-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply to take the disk from 0 to 1800 rpm in 4.7 s ?
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What is the magnitude of the torque on the current loop? (L=1.42 cm, a=2.99 mm, I1=1.6 A, I2=0.12 A.)
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Torque and Angular Acceleration Learning Goal: To understand and apply the formula τ= Iα to rigid objects rotating about a fixed axis. To find the acceleration a of a particle of mass m, we use Newton’s second law. Fnet =ma, where Fnet is ...