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physics14

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physics14
a non uniform bar which is 3m long weighs 60n. if the center of gravity is 1.1m from the larger end. and if the bar is supported at the midpoint, what load must be suspended at the smaller end to maintain equilibrium?

physics14
A uniform disk with a mass of 900 g and radius 17.0 cm is rotating on frictionless bearings with an rotational speed of 18.0 Hz when Jill drops a 180-g clod of clay on a point 8.70 cm from the center of the disk, where it sticks. What is the new rotational speed of the disk?

physics14
In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 multiplied by 10-17 N during the first 2.2 cm of the tube's length; then they move at essentially constant velocity another 43 cm before hitting the screen. (a) Find the ...

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