There is a rod that is attached to a wall so that it pivots. Three forces of known magnitudes are acting on the rod at different locations. All forces are in contact with the rod for the same amount of time. If each force is applied at a diffrent know radius from the pivot point, how would you be able to determine the change in angular momentum for each of those forces
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There is a rod that is attached to a wall so that it pivots. Three forces of known magnitudes are acting on the rod at different locations. All forces are in contact with the rod for the same amount of time. If each force is applied at a diffrent know radius from the pivot point, how would you be able to determine the change in
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- Please explain the concepts of how to work the following practice problem out: A playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars on the carousel very close to its outer edge and climbs aboard. Thus, this person begins with an angular speed of zero and ends up with a nonzero angular speed, which means that he underwent a counterclockwise angular acceleration. The carousel has a radius of 1.61 m, an initial angular speed of 3.03 rad/s, and a moment of inertia of 127 kg*m2. The mass of the person is 40.3 kg. Find the final angular speed of the carousel after the person climbs aboard.A star originates as a large body of slowly rotating gas.Because of gravitational attraction, this large body of gas slowly decreases in size.You can assume that no external forces are acting.Which one of the following statements correctly describes what happens as the radius of the body of gas decreases? Both the moment of inertia and the angular velocity increase. Both the angular momentum and the angular velocity increase. The angular momentum increases and the angular velocity decreases. Both the angular momentum and the angular velocity decrease. The angular momentum remains constant and the angular velocity increases.Thank you for your help in understanding the concepts on how to work out these types of practice problems.
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- A particle of mass 0.300 kg is attached to the 100-cm mark of a meterstick of mass 0.150 kg. The meterstick rotates on the surface of a frictionless, horizontal table with an angular speed of 6.00 rad/s. a) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark. b) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 0-cm mark.Problem 6: You start an antique car by exerting a force of 300 N on its crank for 0.25 s. What angular momentum is given to the engine if the handle of the crank is 0.3 m from the pivot point and the force is applied to maximize the torque?Suppose a 0.250-kg ball is thrown at 15.0 m/s to a motionless person standing on ice who catches it with an outstretched arm as shown , given mass is 70kg What is his angular velocity if each arm is 5.00 kg? You may treat the ball as a point mass and treat the person's arms as uniform rods (each has a length of 0.900 m) and the rest of his body as a uniform cylinder of radius 0.180 m. Neglect the effect of the ball on his center of mass so that his center of mass remains in his geometrical center.