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The crane shown in the drawing is lifting a 174 kg crate upward with an acceleration of1.7 m/s2. The cable fromthe crate passes over a solid cylindrical pulley at the top of theboom. The pulley has a mass of 130 kg. The cable is then wound ontoa hollow cylindrical drum that is mounted on the deck of the crane.The mass of the drum is 150 kg, and its radius is 0.76 m. Theengine applies a counterclockwise torque to the drum in order towind up the cable. What is the magnitude of this torque? Ignore themass of the cable.
Nm
mass, 0.057 kgs, driving force F0 = 8.9 N and linewidth 48 radians/second, has its damping constant, b, changed, Determine the new damping constant,b
A 120-V rms voltage at 60.0 Hz is applied across an inductor, capacitor and a 100-? resistor in series. what is the rms value of the current in this circuit
Consider a single electron, with a mass of 9.1×10?31kg , subject to a single force equal to the weight of a penny, 2.5×10?2N
Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. If, while sleeping during the day, What is the proper orientation of the coil
A 5.5kg block is initially at rest on a frictionless horizontal surface. It is pulled with constant horizontal force of 3.8 newtons. How far does it move in this time
A beam of polarized light is incident upon the first of two polarizing sheets with its polarization direction making an angle of 45° with respect to the polarizing direction of the first sheet. By what angle do the polarizing directions of the two ..
An 8.5 x 11cm sheet of metal is illuminated by a light source located 1.3m directly above it. What is the luminous flux falling on the metal if the source has an intensity of 200cd? What is the total luminous flux emitted by the light source?
The desperate contestants on a TV survival show are very hungry. The only food they can see is some fruit hanging on a branch high in a tree. With what speed does the rock leave the spring
A motorcycle is travelling at a constant velocity of 30ms. The motor is in high gear and emits a hum of 700Hz. find the period of the sound waves emitted from the motorcycle
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
A glass camera lens, with an index of 1.55 is to be coatedwith a cryolite file (n~1.30) to decrease the reflection ofnormally incident green light (λo=500nm). What thickness should be deposited on the lens
Find out the angle of flint glass prism which should be combined with a crown glass prism of 5 degree so as to give dispersion but no deviation
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