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Question: An engineer is designing a spring to be placed at the bottom of an elevator shaft. If the elevator cable should happen to break when the elevator is at a height h above the top of the spring, calculate the value that the spring constant k should have so that passangers undergo an acceleration of no more than 5.0G when brought to rest. Let M be the total mass of the elevator and passengers.
In order to heal properly from a fractured thigh a patient's leg must be kept under traction. In the system shown below the leg a kept under traction by a series of ropes and pulleys attached to a weight W. If the physical therapist specifies that..
Small-plane pilots regularly compete in "message drop" competitions, dropping heavy weights, At what distance from the target should the pilot drop
What is the torque acting on a 11 cm wrench if the F = 62 Newtons and angle theta = 57?
The bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 14.70 of what would be found in a similar live animal. How old are these bones.
In an 8.00km race, one runner runs at a steady 11.3km/h and another runs at 14.5km/h. How far from the finish line is the slower runner when the faster runner finishes the race
Describe at least three ethical controversies surrounding reproductive and therapeutic cloning?
The motion of the block from point A to point B
A drinking fountain shoots water about 14 cm up in the air from a nozzle of diameter 0.60 cm. What gauge pressure does the pump have to provide
Two polarizers are aligned to the angle between their polarization direction is 45 degrees. what fraction of the incident intensity is transmitted though the second
A positive charge of 4 microcoulombs is located at the center of a spherical shell of inner radius 4cm and outer radius 6cm. What is the total charge on the outer shell
A woman finds the front windshield of her car covered with ice at-12.0°C. How much heat is required to melt the ice
the trummelbach waterfall in switzerland has a height of approximately 400 m. assuming that all of the available
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