A particle with mass = 20 kg is initially at the center of a disk that has mass = 80 kg , radius r= 6 m, and angular velocity w= 5rad/s. You move the particle to the edge, find the new angular velocity of the system

A man is pushing a loaded rotating tray with radius of 0.5m on top of a table with a force of F = 4t3 + 1, N where t is in seconds. The rotating tray has a plate with food with m = 1 kg. Find the change in angular momentum of the plate after 2 seconds. F 4 5

A 40-gram point mass is traveling at a velocity of v = 2.6 m/sec parallel    to the x-axis along the line y = 0.2 meters. What is its angular    momentum with respect to the origin?

A 10 kg particle moves in the xy plane with a velocity of v = (3.2 î-6.1 ) m/s. Determine the angular momentum of the particle when its position vector is 7 =(3 i +2.2 j) m. %3D O a:(-253.4k) kg.m2/s Ob:(+253.4 k) kg.m²/s OC(-25.34 k) kg.m²/s d(+25.34 k) kg.m²/s

The figure shows multiple solid disks with uniform mass distribution that are spinning about its center. The mass of the disks are the same, but they have different radii, as shown. Rank the disks by the amount of energy needed to spin the disk so that the outer edge of the disk has linear velocity v, from greatest to least. Explain your reasoning. A B с

You throw a ball of mass 0.61 kg with speed 7.7 m/s at a cylinder of radius 0.22 m as shown. Theball hits the edge of the cylinder and sticks to it, and they spin about the cylinder’s central axis.What is the magnitude of the angular momentum of the ball about the center of the cylinder asthe ball approaches the cylinder?

A particle performing uniform circular motion has angular momentum (L). If its angular frequency is doubled and its kinetic angular energy halved, then the new momentum is : (a) L/4 (b) L/2 (c) 2L (d) 4L

A 3.0-kg mass slides on a frictionless horizontal surface with a speed of 3.0 m / s when it collides with a 1.0-kg mass initially at rest as shown in the figure. The two masses stick to each other and slide on a frictionless circular wheel portion of radius 0.40 m. At what maximum height h, above the horizontal, do the masses reach? Answers: a) 0.18 m       b) 0.15 m      c) 0.21 m      d) 0.26 m        e) 0.40 m

1. A 1571-mg particle is located at the point r = -75.3 cm i - 1876.3 mm j - 63.9 dm k and is moving at a velocity " = -73.1 km/s i - 82.5 hm/s j- 123.4 m/s k. What is the angular momentum (Vector Form and Magnitude) of this particle about the origin?

A woman with mass 50 kg is standing on the rim of a large horizontal disk that is rotating at 0.80 rev/s about an axis through its center. The disk has mass 110 kg and radius 4.1 m. Calculate the magnitude of the total angular momentum of the woman–disk system. (Assume that you can treat the woman as a point.)