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Practicefinal

# Practicefinal - Physics 1A Practice Final Winter 2008 1 A...

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Physics 1A Winter 2008 Practice Final 1) A 2.00 kg package is released on a 53.1 deg incline, 4.00 m from a long spring with force constant 120 N/m that is attached at the bottom of the incline (see figure). The coefficients of friction between the package and the incline are μ s = 0.40 and μ k = 0.20. The mass of the spring is negligible. What is the speed of the package just before it reaches the spring? What is the maximum compression of the spring? The package rebounds back up the incline. How close does it get to its initial position? 2) A 2.00-kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless incline with slope 37.0 deg. What is the speed of the block as it slides along the horizontal surface after having left the spring? How far does the block travel up the incline before starting to slide back down?

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3) A rifle bullet with mass 8.00 g strikes and embeds itself in a block with mass 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring. The impact compresses the spring 15.0 cm. Calibration of the spring
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Practicefinal - Physics 1A Practice Final Winter 2008 1 A...

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