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Consider a stick of length 1 meter and mass 600 grams lying on ice. You pull at one end of the stick, at a right angle to the stick, with a force of 25 N, causing the stick to rotate clockwise. Assume that friction with the ice is negligible. What is the rate of change of the angular speed? The moment of inertia of a rod of mass M and length L about its center of mass is ML2/12.
A yo-yo has a rotational inertia of 977 g•cm2 and a mass of 117 g. How long does the yo-yo take to reach the end of the string
A 64 kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal, What is the magnitude of the kinetic frictional force
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. What is the final speed of the crate if Jack jumps first and then a few seconds later Jill jumps in the same direction
The positron is a particle with the same masses as an electron however charges +e. a positron in a bubble chamber moves perpendicular to a 4.0 T magnetic field. If the positrons kinetic energy is 25eV what is the radius of its trajectory in a bubble ..
A boy pushes a box that has a mass of 355 N up an incline. Ifthe boy exerts a force of 67 N along the incline, what is the mechanical advantage of the incline
A 118-g ball is traveling to the left with a speed of 26 m/s when it is struck by a racket. find the speed of the ball immediately after it leaves the racket
A 0.22-kg ball on a stick is whirled on a vertical circle at aconstant speed. When the ball is at the three o’clockposition, the stick's tension is 17 N. Find the tension in the stick when the ball is (a) at the twelveo’clock and (b) at the sixo’cloc..
During heavy rain, a section of a mountainside measuring 5.1 km horizontally, 0.78 km up along the slope, and 0.95 m deep slips into a valley in a mud slide. What is the mass of the mud sitting above a 3.6 m2 area of the valley floor
a spring without mass has natural length lo. one end is stuck to a fixed point and the other attached to a mass m. the
Find the magnitude of the gravitational force a 63.9 kg person would experience while standing on the surface of Earth with a mass of 5.98 × 10^24 kg and a radius of 6.37 × 10^6 m.
A piston-cylinder device initially contains 1.4 kg of saturated liquid water at 200oC. Determine the final temperature and pressure
the mean distance between the center and the center of the moon is 3.84x108 m and the moon has an orbital period of
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