A Spinning Wheel Steadily Slows From An Initial Angular Velocity Of 2 45 Rev S To 0 465 Rev S In 10 8 S A Calculate T 1 (21.16 KiB) Viewed 26 times
A spinning wheel steadily slows from an initial angular velocity of 2.45 rev/s to 0.465 rev/s in 10.8 s. (a) Calculate the wheel's angular acceleration in radians per second squared. rad/s² (b) What angle does it go through during that time? rad
At a particular instant, a moving body has a kinetic energy of 326 J and a momentum of magnitude 27.2 kg . m/s. (a) What is the speed (in m/s) of the body at this instant? m/s (b) What is the mass (in kg) of the body at this instant? kg
A man opens a 1.45 m wide door by pushing on it with a force of 48.5 N directed perpendicular to its surface. HINT (a) What magnitude torque (in N. m) does he apply about an axis through the hinges if the force is applied at the center of the door? N.m (b) What magnitude torque (in N m) does he apply at the edge farthest from the hinges? N.m
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