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A mass is placed at rest on a ramp inclined at 33 degrees to the horizontal.
a) If friction is negligible, what is its acceleration down the ramp?
b) If the coefficient of friction is 0.25, what is its acceleration?
Two cylindrical rods have the same mass. One is made of silver (density = 10 500 kg/m3), What is the ratio (silver-to-iron) of the lengths
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An asteroid is discovered heading straight toward Earth at 15km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 29degree to its original path at a..
A solid ball encounters a 0.760 m vertical rise on the way back to the ball rack. Find the translational speed at the top
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A 28 kg child plays on a swing having support ropes that are 1.80 m long. A friend pulls her back until the ropes are 43 from the vertical and releases her from rest.
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