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Question: A solid disk of mass m1 = 9.6 kg and radius R = 0.24 m is rotating with a constant angular velocity of ? = 30 rad/s. A thin rectangular rod with mass m2 = 3.4 kg and length L = 2R = 0.48 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk.
1) What is the initial angular momentum of the rod and disk system?
2) What is the initial rotational energy of the rod and disk system?
3) What is the final angular velocity of the disk?
4) What is the final angular momentum of the rod and disk system?
5) What is the final rotational energy of the rod and disk system?
6) The rod took t = 7 s to accelerate to its final angular speed with the disk, what average torque was exerted on it by the disk?
A uniform plank of length 2m and mass 29kg is supported by three ropes, as indicated by the blue vectors. Find the tension in each rope when a 690N person is 0.500m from the left end.
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d. The inner shell has the total charge of -1q and outer shell has a total charge..
A stunt man drives a car at a speed of 20 m/s off a 27-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20 degree. How far from the base of the cliff does the car land
A current of 7.03 A in a solenoid of length 10.8 cm creates a 0.313-T magnetic field at the center of the solenoid. How many turns does this solenoid contain?
three charged particles with q1 -50 nanocoulomb q2 50 nanocoulomb q3 30 nanocoulomb are placed in a triangle. q1 and q2
question1a ferryboat transports tourists among three islands. it sails from the first island to the second island 5.98
A cylindrical disk has volume 8.98*10-3 m3 and mass 7.98 kg. The disk is floating on the surface of some water with its flat surfaces horizontal. The area of each flat surface is 0.636 m2.
Two plane parallel conducting plates 15mm apart are held horizontal one above the other in air. Calculate the number of electrons which must be attached to a small oil drop of mass 4.9 x 10-15 kg
A 900-kg sports car collides into the rear end of a 2500-kg SUV stopped at a red light. Calculate the speed of the sports car at impact
A 2.1*10(3)kg car starts from rest at the top of a driveway that is sloped at an angle of 20.0(degrees) with the horizontal.An average friction force of 4.0*10(3)N impedes the car's motion so that the car's speed at the bottom of the driveway is 3.8..
A boy scout starts a fire by using a lensfrom his eyeglasses to focus sunlight on kindling 5.6 cm from the lens. What is the magnification when the eye is relaxed
The units can either be sold at the split-off point for $9 each, or processed further at total cost of $9,500 and then sold for $12 each. Illustrate should product X be processed further or sold at the split-off point?
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