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A 15-kg motor is supported by four springs, each of constant Computer Problems 60 kN/m. The unbalance of the motor is equivalent to a mass of 20 g located 125 mm from the axis of rotation. Knowing that the motor is constrained to move vertically, use computational software to calculate and plot the amplitude of the vibration and the maximum acceleration of the motor for motor speeds of 1000 to 2500 rpm
a long pipe of outer radius 4.00 cm and inner radius 3.40 cm carries a uniform charge density of 3.22 mcm3. using
A cue ball, which has a mass of 0.17 kg, collides head-on with a stationary 8-ball, what was the velocity of the cue ball before and after collision
A snow skier is racing down a 50-degree slope. If there is no friction between the skis and the snow, What is the component of the acceleration of gravity that causes the skier to move down the slope
Two people carry a heavy electric motor by placing it on a light board 2.00 m long. One person lifts at one end with a force of 100 N, and the other lifts the opposite end with a force of 900 N.
Why is it important to study global demography? What are the forces behind population change? Malthusian Theory: A flawed prediction, or a premonition of times to come?
An astronaut moving with a speed of 0.53c relative to Earth measures her heartrate to be 71 beats per minute. Calculate the astronaut's heart rate, as measured on Earth
Two bodies oscillate in SHM with the same amplitude (7.90 cm), Find the displacement of A when the displacement of B is 7.90 cm
You are a member of a production crew filming a nature explorer in the Rocky Mountains. At what angle with respect to the shoreline would you advise him to swim to travel directly across the stream to his campfire
A uniform drawbridge must be held at a 37.5 degree angle above the horizontal to allow ships to pass underneath. Find the direction of the force the hinge exerts on the bridge
Compute E(trans), G12, and compare with E(trans) by isostress model - Compute vc(long) and vc(trans).
A 0.26 kg rock is thrownvertically upward from the top of a cliff that is 33 m high. Assuming thatair resistance can be ignored, find the initial speed of the rock
A 4.00 kg hoop starts from rest as shown in the diagram below. If the radius of the hoop is 0.500 m, the height, h, is four times the radius of the hoop, and l is equal to the radius of the hoop, what is the linear speed (in meters/second) of t..
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