What is the rotational kinetic energy

Reference no: EM1345094

Q. A 270 ball and a 520 ball are connected by a 50.0-cm-long massless, rigid rod. The structure rotates about its center of mass at 120 rpm.
What is its rotational kinetic energy?

Q. A 30 {g} horizontal metal bar, 15 {cm} long, is free to slide up and down between two tall, vertical metal rods. A 6.0×10^-2 {T} magnetic field is directed perpendicular to the plane of the rods. The bar is raised to near the top of the rods, and a 1.2(Omega) resistor is connected across the two rods at the top. Then the bar is dropped. What is the terminal speed at which the bar falls? Assume the bar remains horizontal and in contact with the rods at all times.

Reference no: EM1345094

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