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Theoretically derive the equation for the period of a ring pendulum. A ring pendulum is a ring with a notch set on a knife edge and pushed a small bit to oscillate at small amplitudes, so that it exhibits simple harmonic motion. We are to start with the equation for the period of rotary simple harmonic motion \(T = 2 \pi\sqrt{I/Lo}\)
Note: The moment of inertia of a body about any axis is equal to the moment of inertia it would have if the mass were all concentrated at the center of gravity plus the moment of inertia of the distributed mass about a parallel axis through its own center of gravity.
A Boeing 747 jet with a wingspan of 60.0 m is flying horizontally at a speed of 300 m/s over pheonix, What voltage is generated between the wingtips
A battery has an emf and an internal resistance . When the battery is connected to a 25 resistor, the current through the battery is 0.65 . When the battery is connected to 60 resistor, the current is 0.45 .
A spring has a spring constant, k, of 440 N/m. How much must this spring be stretched to store 25 J of potential energy
Communications satellites are used to bounce radio waves from the earth's surface to send messages around the curvature of the earth. In order to be available all the time, they must remain above the same point on the earth's surface and must move..
An air puck of mass 0.029 kg is tied to the string and allowed to revolve in a circle of radius 2.0m on a frictionless horizontal surface. The other end of the string passes through a hole in the center of surface, and a mass of 2.6 kg is tied to it...
Two golf balls are glued together and rotated about an axis through the point where they are joined. What is the moment of inertia of the pair of golf balls around the chosen axis
A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field = 0.3 T. Calculate the magnitude of the torque on the loop
As a function of time, the velocity of the football can be written as. Calculate the average acceleration vector of the football
Two slits with a separation of 8.5 x 10-5 cm create an interference pattern on the screen 2.3 m away. what is the wavelength of the light used
The 200 g head of a golf club moves at 40 m/s in a circular ARC of 1.2 m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of swing? Ignore the mass of the club's shaft.
Compute the average force the beam exerts on the pile driver while the pile driver is brought to rest
A skier of mass 61 kg ispulled up a slope by a motor-driven cable. What power must a motor have to perform this task
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