PHYS 1P21 Lecture Notes - Lecture 36: Angular Acceleration, Carrack, Speed
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13 Jul 2016
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PHYS 1P21 Full Course Notes
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Example: the device in the figure is used to determine the speed of a bullet. The two disks rotate with an angular speed of 95. 0 rad/s and are separated by a distance of 0. 850 m. the bullet passes through the disks, and the angular displacement between the two bullet holes is 0. 240 rad. Solution: the time needed for the apparatus to rotate through 0. 240 rad is the same as the time needed for the bullet to move between the two disks. Let"s write an equation setting these two times equal to each other, and solve the equation for the speed of the bullet: If one needs to inject a stream of particles into an experiment, all of which have the same velocity, then one way is to pass them through a similar apparatus that has the holes pre-drilled. Such an apparatus is called a velocity selector.