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The flywheel of a gasoline engine is needed to give up 500 Joules of Kinetic Energy while its angular velocity decreases from 650 rev/min to 520 rev/min. Determine What moment of inertia is needed?
you and a friend are pulling on a box at 90 degree angles to each other. You are pulling with 80 pounds of force, Calculate the resultant force of pull and the angle of pull from the zero angle
Consider two masses that hang from an overhead beam. The first mass of 62.9 kg is attached to the beam using an ideal rope. Find the tension in the lower rope
Tim and Rick both can run at speed and walk at speed, with. They set off together on a journey of distance. Rick walks half of the distance and runs the other half. Tim walks half of the time and runs the other half.
A ball on the end of a string is whirled around in a horizontal circle of radius 0.471 m. The plane of the circle is 1.37 m above the ground. Find the centripetal acceleration of the ball during its circular motion
consider the earth/atmosphere/ionosphere as an equivalent RC circuit with a total resistance of 230 ohm and a total capacitance of 2.9F. how long does this amount of discharge take in hours
A spring of negligible mass has force constant = 1500 . How far must the spring be compressed for an amount 3.10 of potential energy to be stored in it? Find the maximum distance the spring will be compressed
A 2 kg block is pulled by the rope on the horizontal surface by a 3N force. The coefficient of the static friction (?s) equals 0.3. Calculate the force of static friction acting on the block
The figure shows a lower leg being exercised. It has a 49-Nweight attached to the foot and is extended at an angle with respect to the vertical. Consider a rotational axis at the knee, as indicated.
a plastic bag is filled with helium at atmospheric pressure and 23.0 oc. assume that the mass of the bag is negligible
a 70 kg diver steps off a 10 m tower and drops straight downinto the water. determine the average resistance force exerted by the water on the diver
Two containers contain the same gas at different temperatures and pressures, as indicated in the figure. The small container has a volume of 2 L, and the large container has a volume of 4 L.
A motorcycle has a constant speed of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 131 m. The mass of the motorcycle and driver is 348 kg.
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