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1. A body weighing 10 kg is on a horizontal plane. the coefficient of static friction is 0.20.
(a) What horizontal force will start the body?
(b) If the coefficient of kinetic friction is 0.18, what force parallel to the horizontal will keep the body moving uniformly?
A point on the edge of a 2 m diameter wheel moves at a speed of 5 m/s with respect to the axle. What is the angular velocity of the wheel
An astronaut on a small planet wishes to measure the local value of g by timing pulses travelling down a wire which has a large object suspended from it. Imagine the wire of mass 3.80 g is 1.60 m long and has a 3.00-kg object suspended from it. A pul..
a block weighing 100lbs rests on a rough level plane. the coefficient of friction is between the block and the plane is
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For a demonstration, a professor uses a razor blade to cut a thin slit in a piece of aluminium foil. When she shines a laser pointer (?=680nm) during the slit onto a screen 5.5m away, a diffraction pattern appears. The bright band in the center of th..
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