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The flat circular disc rotates about a vertical axis through O with a constant angular velocity of 240rpm. Prior to rotation, each of the 0.5kg sliding blocks has the position x=25mm with no force in its attached spring. Each spring has a stiffness of 400N/m. Neglect any friction between the blocks and the slots, and neglect the mass of the springs.
(a) Determine the value of x for each spring.
(b) Calculate the normal force N exerted by the side of the slot on the block.
A record was set for stair climbing when a man ran upthe 1600 steps of the Empire State Building in 10 minutes and 59secs. what was his average power output during the limb
Water issues from a pipe into the atmosphere as a vertical free jet. if the velocity at the pipe eit is 6m/s, calculate the jet height. Assume fluid friction to be negligible.
a solenoid 60 cm long and of radius 4.0 cm has 3 layers of windings of 300 turns each. a 2.0 cm long wire of mass 2.5 g
a 400 lb weight is dragged along the surface of a table by means of a cord attached to a 200 lb weight which passes
A 24-V battery is attached to a 100-ohm resistor and a 3.0-mF capacitor. If the capacitor is initially uncharged, how long will it take for the capacitor to reach a charge of 50 mC?
A 528 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 3.2 meters
A 0.0500 kg cube of ice at an initial temperature of-15.0oC is placed in 0.600 kg of water at T =45.0oC in an insulated container of negligible mass. Calculate the change in entropy of the system
one bright summer day a swimmer is floating with her head just above the surface of a large lake where the water has
A beam of light is incident upon a flat piece of glass (n =1.50) at an angle of incidence of 45 degrees. Find the angle between the transmitted and reflected rays
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. find the oxygen concentration at the interior end of the tube
At the Earth's surface a projectile is launched straight up at a speed of 8.5 km/s. To what height will it rise
The position of an object as a function of time is r? = (3.2t+ 1.5 t2)i^+(1.7t? 2.0 t2) j^m, where t is the time in seconds. What is the direction of the acceleration? Discover the object’s magnitude of the acceleration.
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