Find the rotational kinetic energy (in Joules) of the compos…

Find the rotational kinetic energy (in Joules) of the composite object in the figure. The axis of rotation is shown with a dashed line. The two thin rods are uniform and each has a length L= 1.0 m and mass M= 6.0 kg. The hoop has a radius L and a mass M. The hoop, the rods, and the axis of rotation are all in the same plane. rotating with angular velocity ω= 4.0 rad/s.

A nylon guitar string has a linear density of μ= 4.88 g/m an…

A nylon guitar string has a linear density of μ= 4.88 g/m and is under tensionτ= 144 N. The fixed supports are D= 90.8 cm apart. The string is oscillating in the standing wave pattern as shown in the figure. Calculate the frequency (in Hz) of the traveling waves whose superposition gives this standing-wave pattern.