Physics, 09.03.2020 22:52 CamarianMcNeal1855
To learn the definition of the center of mass for systems of particles anda be able to locate it.
Imagine throwing a rock upward and away from you. With neglible air resistance, the rock will follow a parabolic path before hitting the ground. Now imagine throwing a stick (or any other extended object). The stick will tend to rotate as it travels through the air, and the motion of each point of the stick (taken individually) will be fairly complex. However, there will be one point that will follow a simple parabolic path: the point about which the stick rotates. No matter how the is thrown, this special point will always be located at the same position within the stick. The motion of the entire stick can then be described as a combination of the translation of that single point (as if the entire mass of the stick were concentrated there) and the rotation of the stick about that point. Such a point, it turns out, exists for every rigid object or system of mssive particles. It is called the center of mass.
To calculate the center of mass for a system of massive point particles that have coordinates (x, y) and masses m4, the following equations are used.
Xcm = m1 + x1 +m2x2 +m3x3+ .../ m1 + m2 + m3 + ...
Ycm = m1y1 + m2y2 + m3y3 + .../m1 + m2 + m3 +
Part A: Two particles of masses m1 and m2 (m1 < m2) are located 10 meters apart. Where is the center of mass of the system located ?
Correct - more than 5 meters but less than 10 meters from the particle of mass m1
Part B: For the system of three particles shown, which have masses M, 2M, and 3M as indicated, where is the center of mass located :
Correct - between the particle of mass 2M and the particle of mass 3M
NEED !!! Part C: For the system of particles described in Part B, find the x coordinate Xcm of the center of mass. Assume that the particle of mass M is at the origin and the positive x axis is directed to the right.
Express your answer in terms of L.
Answers: 2
Physics, 21.06.2019 22:00
In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i.e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?
Answers: 2
Physics, 21.06.2019 23:30
Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement
Answers: 3
Physics, 22.06.2019 07:30
Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud
Answers: 2
Physics, 22.06.2019 12:20
What is the coefficient of kinetic friction μk between the block and the tabletop?
Answers: 1
To learn the definition of the center of mass for systems of particles anda be able to locate it.
Physics, 05.05.2020 23:03
Social Studies, 05.05.2020 23:04
Computers and Technology, 05.05.2020 23:04
Mathematics, 05.05.2020 23:04
Mathematics, 05.05.2020 23:04
History, 05.05.2020 23:04
Biology, 05.05.2020 23:04
Physics, 05.05.2020 23:04
Physics, 05.05.2020 23:04