A bug of mass 3.8 g is sitting at the edge of a CD of radius 4.0 cm. If the CD is spinning at 250 rpm, what is the angular momentum of the bug?

A bug of mass 2.0 g is sitting at the edge of a CD of radius 3.0 cm. If the CD is spinning at 250 rpm, what is the angular momentum of the bug?
A bug of mass 2.0 g is sitting at the edge of a CD of radius 4.0 cm. If the CD is spinning at 260 rpm, what is the angular momentum of the bug? kg m2/s
Consider a spinning CD which has a mass of 15.0 g. If the radius of the CD is 7.9 cm, and if it rotates about its centre at an angular frequency of 50.3 rad/s, what is its rotational kinetic energy (in J)? Assume the CD is a solid disk (i.e. ignore the hole in the center.).
You are sitting on a merry-go-round of mass 200 kg and radius 2m that is at rest (not spinning). Your mass is 50 kg. Your friend pushes the edge of the merry go round with 100 N of force, applied at a 90 deg angle. (hint: the merry-go-round is a disk). a. How much torque did your friend apply? b. What is your angular acceleration if you are sitting in the middle of the merry-go-round? c. What is your angular...
A woman with a mass m = 68.0 kg is sitting on the edge of a large rotating disk with a mass M = 105 kg and a radius R = 3.20 m. The disk and woman are rotating at a rate ω = 0.500 rev/sec. Determine the moment of inertia I for the disk and woman assuming that the woman acts like a point mass at the edge of the disk. Calculate the total angular momentum for the disk...
A DVD (radius 6.0 cm) is spinning freely with an angular velocity of 1150 rpm when a bug drops onto and sticks to the DVD a distance 4.4 cm from the center. If the DVD slows to 900 rpm, what is the ratio of the bug's mass to the DVD's mass? (Ignore the effect of the hole in the center of the DVD.) mbug mOVD
A disc-shaped merry-go-round has a mass of 100 kg and a radius of 1.60 m and is initially spinning at 20.0 rpm, with a 33-kg child sitting at its center. The child then walks out to the edge of the disc. (a) Find the initial and final moments of inertia of the system (disc + child), treating the child as a point particle. (b) State why the system’s angular momentum is conserved. (You can assume that the axis of the...
A bug of mass 0.028 kg is at rest on the edge of a solid cylindrical disk (M = 0.10 kg,R = 0.20 m) rotating in a horizontal plane around the vertical axis through its center. The disk is rotating at 12.0 rad/s. The bug crawls to the center of the disk. (a) What is the new angular velocity of the disk? 18.72 rad/s (b)What is the change in the kinetic energy of the system?0.126 J (c) If the bug...
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 28 rad/s in 0.31 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 28 rad/s in 0.47 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.