Coefficient of kinetic friction between the skier and snow
A skier slides horizontally along the snow for a distance of 12 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.080. Initially, how fast was the skier going?
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One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down with an average angular speed of 1.4 rev/s. Ignore air resistance and determine the number of revolutions she makes while on the way down.
In 9.5 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.
A 0.073 kg arrow is fired horizontally. The bowstring exerts an average force of 75 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow?
The coefficient of performance is COPH = 15. Determine TL for the low-temperature heat reservoir and the work required to operate the heat pump, W.
The maximum torsional stress is 12 ksi, and the maximum shear stress is 10 ksi. What is the von Mises stress for a point on the upper surface of the bar?
Relative to the ground, what is the gravitational potential energy of a 62.0 kg person who is at the top of the Sears Tower, a height of 443 m above the ground?
The maximum torsional stress is 12 ksi, and the maximum shear stress is 10 ksi. What is the von Mises stress for a point on the neutral axis of the bar at the outer radius?
When the particle is 6 m to the left of the origin, it has a velocity of 3 m/s to the right. Find the time for the particle to get from this position to the origin.
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