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A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, and the top is set spinning by applying T= 2.40 N of constant tension to each string. If it takes 0.830 s for the string to unwind.
1- How much angular momentum does the top acquire? Assume that the strings do not slip as the tension is applied.
2- If the final tangential speed of point P, h= 35.0 mm above the ground, is 1.15 m/s and the angle theta is 26.0 what is the top's moment of inertia?
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A rocket is launched at an angle of 57.0° above the horizontal with an initial speed of 99 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 30.0 m/s2. At this time, its engines fail and the rocket proceeds ..
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