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A machine element weighing 800 lb is supported by two springs, each having a constant of 200 lb/in. A periodic force of maximum value 30 lb is applied to the element with a frequency of 2.5 cycles per second. Knowing that the coefficient of damping is 8 lb s/in., determine the required value of the coefficient of damping if the amplitude of the steady-state vibration of the element is to be 0.15 in.
A ball is thrown upward from the ground with an initial speed of 23.90 m/s; at = same instant, a ball is dropped from a building 16 m high. After how long will the balls be at the same height.
a large point charge of q 50 microc creates an electric field and an electric potential all around it. a styrofoam
Suppose the amount of heat added to the ice block is doubled. By what factor must the mass of the ice be increased if the system is to have the same final temperature
A bacterium using its flagellum as propulsion can move through liquids at a rate of 0.003 m/s. What amount of force must the flagellum generate to propel the bacterium at a constant velocity of 0.003 m/s
During an earthquake, the top of a building oscillates with an amplitude of 32cm at 1.3Hz. What is the maximum acceleration of the top of the building
A 6.00 kg mass (m) is suspended from a 65 kg flywheel having a radius of 0.75 m. Determine the angular acceleration of the flywheel as the mass falls
A 70.5-kilogram child starts from rest from the top of a frictionless slide that is 5.6 meters tall. The bottom of the slide is 25.0 centimetres above the ground. What is the child's speed at the bottom of the slide?
The catapult of the aircraft carrier USS Abraham Lincoln accelerates an F/A-18 Hornet jet fighter from rest to a takeoff speed of 77.33 in a distance of 93.57 . suppose constant acceleration.
Water drips from the nozzle of a shower onto the floor 235 cm below. The drops fall at regular (equal) intervals of time, the first drop striking the floor at the instant the fourth drop begins to fall. Find the location of the third drop as measured..
A hardworking ant must supply 0.00655 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony. Use the work-energy theorem to calculate the mass of the piece of fruit in grams
A mass m1 = 4.9 kg rests on a frictionless table and connected by a mass less string over a mass less pulley to another mass m2 = 4.6 kg which hangs freely from the string. How much work is done by gravity on the two block system
an object is placed to the left of aa lens and a real image is formed to the right of the lens. the image is inverted relative to the object and is one half the size of the object. how far from the lens is the object
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