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A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. The carousel itself (without riders) has a moment of inertia of 115 kg·m2. When one person is standing at a distance of 1.50 m from the center, the carousel has an angular velocity of 0.580 rad/s. However, as this person moves inward to a point located 0.750 m from the center, the angular velocity increases to 0.720 rad/s. What is the person's mass?
Certain rifles can fire a bullet with a speed of 950 m/s just as it leaves the muzzle (this speed is called the muzzle velocity). What is the acceleration of the bullet within the rifle
Once the station is completed, it is set rotating at a rate that requires an object at the rim to have radial acceleration, thereby simulating Earth's surface gravity. This is accomplished using two small rockets, each with 130 thrust that are mounte..
what is the horizontal distance x to the base. find the average net force exerted on him in the barrel of the cannon.
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. What is the average net force (magnitude and direction) exerted on the ball by the cushion
What is the magnitude of an object's average velocity if an object moves from a point with coordinates x = 2.54 m, y = -3.56 m to a point with coordinates x = 7.85 m, y = -6.54 m in a time interval of 2.02 s.
A system absorbs at a 45% efficiency in a location where average solar-energy hitting the solar pan- els is 210 W/m2. what volume of water can be heated in one hour
Find out d, the distance between the photogates, using the times and glider length. There is two ways to find this for the up and down directions.
A 5.7kg box is on a frictionless 44° slope and is connected via a massless string over a massless, find the tension in the string once the box begins to move
A 68kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is standing 1.5m from one scale, and, 0.5m from the other. What is the reading on each of the scales.
An RLC circuit is used in a radio to tune into an FM station broadcasting at f = 99.7 MHz. The resistance in the circuit is R = 12.4 ?, What capacitance should be used
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. what is the mass of the helium
During a golf drive, the angular velocity of the driver is 20 rad/s just before impact with the golf ball. If the distance from the club head to the axis of rotation is 2.0 m
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