An object pivoting about its center of mass is
Free of net torque |
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Motionless |
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Always in motion |
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Experiencing a torque about its center of mass. |
Free of net torque
Weight and center of mass, pivot are coinciding. So, net torque is zero
An object pivoting about its center of mass is Free of net torque Motionless Always in...
4. Consider a circular object that is free to rotate about its central axis. The object is sitting horizontally on ice, so that ction is negligible. (Think of a hockey rotating, or more precisely to change its rate of rotation? Is it a net force, which is the cause of changes in linear motion, or is it something else? puck.) An i is, what exactly causes such an object to start mportant ues ion The diagrams below show such an...
If an object is in static equilibrium, there must be no net external torque: A) Group of answer choices about an axis located at the edge of the object. B)about an axis located at the object's center of gravity. C)about an axis located beneath the object's center of gravity. D) about any axis.
When a net torque is applied to a rigid object it always produces a 1. constant acceleration 2. rotational equilibrium 3. constant angular velocity 4. constant angular momentum 5. change in angular velocity
3. (25 points) A small object of mass m slides around in a horizontal, frictionless, circular tube of radius R. The object is given an initial velocity vo at the point shown. At somc later timc, defined to be t = 0, some strange force starts to act on the object The force is always directed opposite to the object's velocity and has known constant magnitude c as long as the object is moving. Consider only the time while the...
The 27.3-cm-diameter disk can rotate on an axle through its center. What is the net torque about the axle? (a=4.5 cm, q=41°, F1=25 N, F2=59 N, F3=30 N, F4=33 N.)
The 24 cm diameter disk in the figure can rotate on an axle through its center. What is the net torque about the axle if F = 26·N?
A small object of mass 3.8g and charge -18C is suspended
motionless above the ground when immersed in a uniform electric
field perpendicular to the ground.
a) what are the magnitude and direction of the electric
field?
b) if an object of mass 2g with charge 9.0C was placed in the
field, what would its acceleration be? ( magnitude and direction
)
(4.1) An object which is free to rotate about a fixed axis (through the origin and directed into the page) is subjected to three applied forces as shown in the figure. All other forces cancel exactly and do not contribute to the torque about the axis. F-3N acting at (4,3) acting at F6N 53.13] acting at -(0,-2.5) =5N [t] ri = (-24 , 1)a -53.13° (a) Determine the torque produced about the axis by (b) Deternine the torque produced about...
Does a force applied to an object always produce motion? What can you figure out about the forces on an object just by observing its motion? If no forces are acting on a body, can the body be in motion? Explain.
An object with a mass of m - 4.80 kg is attached to the free end of a light string wrapped around a reel of radius R - 0.275 m and mass of M 3.00 kg. The reel is a solid disk, free to rotate in a vertical plane about the horizontal axis passing through its center as shown in the figure below. The suspended object is released from rest 6.80 m above the floor. (a) Determine the tension in...