Determine the minimum coefficient of static friction
Determine the minimum coefficient of static friction between the uniform 50 kg spool and the wall so that the spool does not slip.
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A 85.2-kg vertically-falling skydiver experiences an upward force of air resistance of 1340 N. Determine the acceleration (in m/s/s) of the skydiver. (Enter a - value if the direction is downward.)
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The buoyancy force acting on a 500 kg balloon is Fb=6KN and the air resistance is Fd=(100v) N where v is in m/s. Determine the terminal velocity of the balloon if it starts from rest.
A 73 kg skydiver can be modeled as a rectangular "box" with dimensions 21cm x 44cmx 1.8m? What is his terminal speed if he falls feet first? (m/s)
What is the temperature at the exit of the valve in oC? What is the internal energy (kJ/kg) of the refrigerant at the exit of the valve?
A pile weighing 2000 lb is driven vertically into the ground by a pile-driver hammer weighing 6000 lb which falls freely from rest through a height of 16 ft to the head of the pile.
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