Physics

Physics, 03.07.2019 22:20, berliedecius4051

Alarge wooden turntable in the shape of a flat uniform disk has a radius of 2.00 m and a total mass of 120 kg. the turntable is initially rotating at 2.00 rad/s about a vertical axis through its center. suddenly, a 80.0-kg parachutist makes a soft landing on the turntable at a point near the outer edge. a) find the angular speed of the turntable after the parachutist lands. (assume that you can treat the parachutist as a particle.)
b) compute the kinetic energy of the system before the parachutist lands.
c) compute the kinetic energy of the system after the parachutist lands.

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Engineering, 18.07.2019 22:20, mrgoggles12

The bar has a mass of 1.5 kg and a length of 25 cm, and is positioned in a smooth groove in the turntable, which is initially rotating at 400 rpm. the turntable has a radius of 30 cm, a mass of 15 kg and a radius of gyration of 20 cm. initially the midpoint of the bar is coaxial with the axis of rotation. if it is given a slight push, it will migrate to the edge of the turntable. determine the rotational velocity of the turntable when the end of the bar reaches the edge of the disc. ignore the effect of friction. 400 rpm

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Physics, 25.07.2019 23:10, Idkdumb

Ahorizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 7.7 rad/s about a fixed vertical axis through its center. the turntable has a radius of 0.16 m and a moment of inertia of 0.01792 kg m2 about the rotation axis. a piece of clay, initially at rest, is dropped onto the turntable and sticks to it at a distance d= 0.28 m from its center as shown in the figure. the final angular velocity of the turntable and the clay after the collision is 3.7 rad/s. treat the piece of clay as a point particle and assume that there are no external torques acting on the system around the rotation axis. which of these quantities are conserved during the collision? (a) the total linear momentum of the clay and the turntable. (b) the total angular momentum of the clay and the turntable about the rotation axis. (c) the angular momentum of the turntable about the rotation axis. (d) the angular momentum of the clay about the rotation axis. (e) the mechanical energy of the clay and the turntable

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Physics, 02.11.2019 06:31, icantspeakengles

Abeetle with a mass of 15.0 g is initially at rest on the outer edge of a horizontal turntable that is also initially at rest. the turntable, which is free to rotate with no friction about an axis through its center, has a mass of 75.0 g and can be treated as a uniform disk. the beetle then starts to walk around the edge of the turntable, traveling at an angular velocity of 0.0500 rad/s clockwise with respect to the turntable. what is the angular velocity of the turntable (with respect to you)? use a positive sign if the answer is clockwise, and a negative sign if the answer is counter-clockwise.

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Alarge wooden turntable in the shape of a flat uniform disk has a radius of 2.00 m and a total mass...

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