# HW23 - x Distance(m Three Masses in a Plane Figure Drawn to...

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Thevalingam, Donald – Homework 23 – Due: Mar 21 2007, midnight – Inst: Eslami 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points Three particles are located in a coordinate system as shown in the figure below. The acceleration of gravity is 9 . 8 m / s 2 . The mass 8 kg is located at the origin, the mass 3 kg is located on the x coordinate, and the mass 6 kg is located on the y coordinate. x y 6 kg 8 kg 3 kg 13 m 4 m Find the distance of the center of gravity from the origin. Answer in units of m. 002 (part 1 of 1) 10 points A uniform flat plate of metal is situated in the reference frame shown in the figure below. 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 x y Calculate the x coordinate of the center of mass of the metal plate. 003 (part 1 of 2) 10 points Three spherical masses are located in a plane at the positions shown in the figure below. A has mass 50 . 7 kg, B has mass 19 . 7 kg, and C has mass 42 . 9 kg. 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 A B C y
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Unformatted text preview: x Distance (m) Three Masses in a Plane Figure: Drawn to scale. Calculate the x-coordinate oF the center oF mass. Answer in units oF m. Your answer must be within ± 3%. 004 (part 2 oF 2) 10 points Calculate the y-coordinate oF the center oF mass. Answer in units oF m. Your answer must be within ± 3%. 005 (part 1 oF 2) 10 points Three particles are placed in the xy plane. A m 1 = 30 g particle is located at ( x 1 , y 1 ), where x 1 = 8 . 7 m and y 1 = 2 . 6 m and a m 2 = 19 g particle is located at ( x 2 , y 2 ), where x 2 =-3 . 8 m and y 2 =-1 . 4 m . What must be the x coordinate oF the m 3 = 30 g particle so that the center oF mass oF the three-particle system is at the origin? Answer in units oF m. 006 (part 2 oF 2) 10 points What must be the y coordinate oF the m 3 = 30 g particle so that the center oF mass oF the three-particle system is at the origin? Answer in units oF m....
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