Physics, 24.10.2019 02:00 Michael9979
The assembly of two 5-kg spheres is rotating freely about the vertical axis at 40 rev/min with . if the force f which maintains the given position is increased to raise the base collar and reduce to , determine the new angular velocity . also determine the work u done by f in changing the configuration of the system. assume that the mass of the arms and collars is negligible.
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Acurve connects the data points that are plotted. (physical science chapter 11 motion)
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The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.
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Physics, 22.06.2019 12:20
Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)
Answers: 1
The assembly of two 5-kg spheres is rotating freely about the vertical axis at 40 rev/min with . if...
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