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In Prob. 17.60, determine the time required for the angular velocity of the flywheel to be reduced to 40 rpm clockwise.Prob. 17.60 The 350-kg flywheel of a small hoisting engine has a radius of gyration of 600 mm. If the power is cut off when the angular velocity of the flywheel is 100 rpm clockwise, determine the time required for the system to come to rest.
eight uncharged capacitors with equal capacitances are combined in series. the combination is connected to a 7.45-v
A 3.70-kN piano is lifted by three workers at a constant speed to an apartment 26.7 m above the street using a pulley system fastened to the roof of the building. find the time required to lift the piano from the street to the apartment
a 38 g bullet strikes a 0.65 kg block attached to a fixed horizontal spring whose spring constant is 6.2 x 103 nm and
Three single-phase step-up transformers rated at 10MVA, 4.6kV/13.8kV are connected in Wye-Delta configuration. The three transformers are used to feed a 20MVA load at 0.9 p.f. With an efficiency of 96%. Find the secondary line voltage.
A .14kg baseball with an initial speed of 28m/s rebounds with a speed of 34m/s after being struck with a bat. What was the average force between ball and bat
A particle of charge 3.5x10-19 C and mass 16.51x10-27 kg moving at 4.5x106 m/s enters a 0.0047 Tesla magnetic field. What is the radius of the circular orbit traveled by this particle in the field
A boxer receives a horizontal blow to the head that topples him over. The force, of magnitude 1.06 x 10^3 N, is applied for 1.1 x 10^-2 s at a point 1.82 m above the floor. Find the boxer's final angular velocity
An object of mass m moves in a circular orbital under the influence of an harmonic oscillator potential U(r)=1/2(alpha)r^2, Determine the energy of the orbiting object
A bowling ball of mass M and Radius R (treated as a solid sphere) is thrown along a level surface so that initially (t = 0) it slides with a linear speed Vo but dows not rotate, How long does it take to begin rolling without slipping
A child is twirling a 0.012 kg ball on a string in a horizontal circle whose radius is .100 meters. The ball travels once around the circle in .500 seconds.
A kaon is moving in the +x direction decays by this process, where that pi^+ is moving off at a speed of 0.9c in the +x-direction, determine the speed of the kaon before the decay
A small rock with mass 0.20 kg is fastened to a mass less string by length 0.90 m to form a pendulum. The pendulum is swinging so as to create a maximum angle of 45° with the vertical. Air resistance is negligible.
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