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A solid cylindrical disk has a radius of 0.25 m and it can rotate about a vertical axis.
a. When a 45 N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an angular acceleratrion of 80 rad/s^2. What is the mass of the disk?
b. A small 0.2 kg mass is now welded at the edge of the disk. If the same force as in Part A is now applied to the disk, what is its new angular accelaeration?
When a turntable rotating at 33 1/3 rev/min is shut off, it comes to rest in 24 s. Assume constant angular acceleration. Find the average angular velocity of the turntable
Calculate the linear speed due to the Earth's rotation for aperson at a point on its surface located at 40 degrees N latitude.The radius of the Earth is 6.40 x 10^6 m
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A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.884 A) sin [(333 Hz)t]. What is the average power delivered to the light bulb
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Find the translational speed at the top
An electron is trapped in a one-dimensional infinite well and is in its first excited state. What is the width of the potential well
A pendulum bob passes through the lowest part of its path at speed of 2 m/s. What is the tension in the pendulum cable at this point if the pendulum is 80 cm long
A horse races once around a circular track in a time of 118s, with a speed of 17 m/s. What is the radius of the track? How do you go about solving this.
The applied force acts for 5.9 s, during which time the angular speed of the wheel increases from 0 to 12 rad/s. The applied force is then removed, and the wheel comes to rest in 65 s. Illustrate what is the frictional torque?
q1. a 3.3 block of wood sits on a table. a 3.0 bullet fired horizontally at a speed of 480 goes completely through the
A 67? resistor, an 9.0?F capacitor, and a 36mH inductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
Bronco Brown is mowing his lawn. He applies a force F along the handle of the lawnmower as shown. Bronco moves the mower at constant velocity. What is the magnitude of the resistance force acting horizontally on the mower
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