AL : L' 23.5° Plane of earth's orbit S'

What is the angular momentum of a .4kg hula-hoop with a diameter of 1.2m while it rotates at 7 r/s?

Star Trillian-2009 was initially observed by astronomers to spin with a period of 25 days, and was computed to have a rotational inertia of 23.81 IARIU (International Astronomical Rotational Inertia Units). It then undergoes a change, and the new rotational inertia is calculated to be a third of the original value. What is the new rotational period of the star?

a 0.400 kg ball is shot directly upward at initial speed 76.5 m/s. What is its angular momentum about P, 8.72 m horizontally from the launch point, when the ball is (a) at maximum height and (b) halfway back to the ground? What is the torque on the ball about P due to the gravitational force when the ball is (c) at maximum height and (d) halfway back to the ground?   i need the answered to d

The ball has a mass of 1 kg and is confined to move along the smooth vertical slot due to the rotation of the smooth arm OA. The rod is rotating with a constant angular velocityd slot at any instant. Which one of the following is (are ) incorrect answers ? =2 rad/s. Assume the ball contacts only one side of the ion e-2 rads Select one or more: There is only one contact force on the ball that is acting perpendicular to the rod. There are two contact forces on the ball: one is acting perpendicular to the wall, and the other is perpendicular to the rod. The path of the ball is given by r 0.5 sec 0. The acceleration along the 0 increasing direction is a, tan 6 sec 00 The normal reaction to the ball by the rod is given by the equation N gcos+ a, whiere ap s the acceleration along the 6 increasing direction.

Viewed from somewhere in space above the north pole, would a point on the earth’s equator have a positive or negative angular velocity due to the earth’s rotation?

A frisbee’s stability is maintained by its angular momentum. A 175gram frisbee with a diameter of 12inchesis thrown with an angular velocity of 5rev/s . Assume the frisbee can be modeled as a flat solid disk. Find the magnitude of the angular momentum vector.

Calculate the angular momentum of a 205 kg motorcycle traveling at 40 m/s, and traveling around a circular curve 600 m in radius.

Please don't provide handwritten solution.   Three identical full spheres of mass 3.1kg and Radius R=2.9m are welded together in such a way that the centres of each of them are at (R,0,0), (3R,0,0) and (5R,0,0). The whole system rotates in +XY plane about the axis parallel to z axis and passing through point (6R,0,0). Find the moment of inertia of the whole system. State your answer to the nearest tenth of kgm2.

A ball of mass 5.5 kg is released from rest from the top of a 4.0 m long hill that is inclined at 30°, as shown in figure. The ball rolls along the hill without slipping. The rotational inertia of a sphere of mass M and radius R about its center of mass is MR. (cos 30° = 0.866, sin 30° = 0.5, g = 9.8m/s?) a) Calculate the force due to friction acting on the ball as it rolls along the hill, b) Calculate the linear speed of the center of mass of the ball when it reaches the bottom edge of the hill, c) A wagon containing a box is at rest on the ground below the hill so that the ball falls the vertical distance of 3.0 m and lands and sticks in the center of the box. The total mass of the wagon and the box is 12 kg. Calculate the horizontal speed of the wagon immediately after the ball lands in it. 4,0 m 3.0 m