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Q. One end of a light spring with force constant 300-N/m is attached to a vertical wall. A light string is tied to the other end of horizontal spring. The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.0cm. The pulley is free to turn on a fixed smooth axle. The vertical section of the string supports a 400 g object. The string does not slip at its contact with the pulley.
Find out the frequency of oscillation if the mass of pulley is 450 g.
Find out the frequency of oscillation if the mass of pulley is 750 g.
A park merry-go-round consists of a 210 kg circular wooden platform 3.90 m in diameter. Four children running alongside push tangentially along the platform's circumference until, starting from rest, the merry-go-round reaches a steady speed of on..
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
A convex spherical mirror with a radius of curvature of 14.5 cm creates a virtual image one half the size of the real object. Where is the object.
Find out the velocity with which he strikes the water. (Hint: When the diver reaches the water, his displacement is y = -3 m (measured from the board), assuming that the downward direction is chosen as the negative direction.)
At which wavelengths (or energies) will you observe lines in infrared absorption (a phonon absorbs a photon) and raman scattering spectra? The temperature is 300 k. raman scattering is excited with a cw Argon laser at 514.5 nm.
Next you eliminate the 11 kg mass, place the rod horizontally, and strike one end with a hammer. How much time t would elapse before a microphone at the other end of the bar will detect a disturbance.
A circular coil enclosing an area of 96 cm2 is made of 199 turns of copper wire. The wire making up the coil has resistance of 3.0 , and the ends of the wire are linked to form a closed circuit.
A set of 20 stairs, each of 20-cm height, is ascended by a 700 N man in a period of 1.25 s. Compute the mechanical work, power, and change in potential energy all through the ascent. I have 2800J. Where do I go from here.
when combing your hair, you transfer electrons from the hair onto the comp. is your hair then positively or negatively charged? how about the comb.
Suppose that the net horizontal force is because of rolling friction only and take the free-fall acceleration to be g = 9.80 m/s^2. What is the coefficient of friction for the tire under low pressure.
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
The gravitational force between two masses M and m separated by a distance r is 40 N. What is the new force when this distance is halved?
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