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For a rigid axisymmetric satellite, the mass moment of inertia about its long axis is 1000 kg$m2, and the moment of inertia about transverse axes through the center of mass is 5000 kg$m2. It is initially spinning about the minor principal body axis in torque-free motion at us ¼ 0.1 rad/s, with the angular velocity lined up with the angular momentum vector H0. A pair of thrusters exert an external impulsive torque on the satellite, causing an instantaneous change DH of angular momentum in the direction normal to H0, so that the new angular momentum is H1, at an angle of 20o to H0, as shown in the figure. How long does it take the satellite to precess ("cone") through an angle of 180o around H1?
A hockey puck Brests on a smooth surface of ice and is struck by a second puck A, Compute the speed of puck after the collision
A baseball is thrown horizontally at the catcher, who is 60.0 ft away. It is thrown with a velocity of 87.5 mph. How far does the baseball fall during this pitch.
Tarzan is in the path of a pack of stampeding elephants when Jane swings in to the rescue on a rope vine, hauling him off to safety. The length of the vine 25 m, and Jane starts her swing by the rope horizontal. If Jane's mass is 54kg, and Tarzan's..
A long wire carrying a 5.90A current reverses direction by means of two right-angle bends, as shown in the figure (Figure 1). The part of the wire where the bend occurs is in a magnetic field of 0.666T confined to the circular region of diameter 75.0..
You are at the controls of a particle accelerator, sending a beam of 3.90×107m/s protons (mass m ) at a gas target of an unknown element. What is the speed of the unknown nucleus immediately after such a collision
A 34 kg child on a swing 6,9 meters long is released from rest when the swing supports make an angle of 38,9 degrees with the vertical. Neglecting friction, find out the child's speed (m/s) at the lowest position to two decimal places. Use 9,8 m/s..
A rock is projected from the edge of the top of a building with an initial velocity of 17.6 m/s at an angle of 31 degrees above the horizontal. The rock strikes the ground a horizontal distance of 93 m from the base of the building. The accelerati..
jose is looking to the east. lightning bolt 1 strikes a tree 300 m from him. lightning bolt 2 strikes a barn 900 m from
A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops moving perpendicularly (see figure).
a 10 kg hollow cylindrical shell rolls on the ground at a linear velocity of 5m/s. its diameter is 50 cm. what is its total kinetic energy
A candle is on the axis of a 15-cm-focal-length concave mirror, 36 cm from the mirror. Is the image real or virtual
you are watching a pier being constructed on the far shore of a saltwater inlet when a blasting occurs. you hear the
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