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A uniform bar of mass M and length 2L is suspended from one end by a spring of force constant k . The bar can swing freely only in one vertical plane ,and the spring is constrained to move only in the vertical direction. Setup the equations of motion in the Lagrangian formulation.
If you stand on a bathroom scale, the spring inside the scale compresses 0.80mm , and it tells you your weight is 680N. what does the scale read at its peak
A tall, slender drinking glass with a thin base is initially empty. Where is the center of mass of the glass
the velocity of light (c) is 3x108 m/s. an AM radio station is at 1500 (kHz) on the radio dial. what is the wavelength of the waves broadcast by this station
A cub scout makes a simple microscope by placing two converging lenses of +18.0 D at opposite ends of a 27.9-cm-long tube. What is the tube length of the microscope
In alpha particle with a kinetic energy of 0.51 MeV approaches a stationary gold nucleus. What is the speed of the alpha particle?
How much energy is delivered to the battery. What is the velocity v of the smaller fish before lunch.
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
In a thundercloud there may be electric charges of +37.0 C near the top of the cloud and -37.0 C near the bottom of the cloud. What is the electric force on the top charge
A brick is thrown upward from the top of a building at an angle of 20° to the horizontal and with an initial speed of 10 m/s. how tall is the building
A certain type of propeller blade can be modeled as a thin uniform bar 2.80m long, find the maximum angular acceleration the blade could achieve
Two people carry a heavy electric motor by placing it on a light board 2.05 m long. One person lifts at one end with a force of 405 N , Where along the board is its center of gravity located
Tarzan swings through the jungle by hanging from a vine. Immediately after he steps off the branch, is Tarzan's acceleration zero or nonzero
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