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Santa's reindeer pull his sled (m=1.0 x 103 kilogram) on an icy (essentially frictionless), horizontalroad.
a) Compute the work done by the reindeer to accelerate the sled to 12 m/s.
b) Compute how much power is being delivered to the sled if they reach the final speed after 20.4 s?
Assume, they are now crossing a snow covered field (μk = 0.030, width of the field is 75 meter) at a constant speed of 12 m/s.
c) Calculate how much energy will be dissipated by friction?
d) Determine the power being delivered by the reindeer in order to keep the sled moving at constant speed.
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A 0.200 kg block is placed on a vertical spring (k = 5.80x 10^3 N/m) and pushed downward, compressing the spring 0.100 m. As the block is released, it leaves the spring and continues to travel upward. What height above the point of release will bl..
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