You can explore tags individually by clicking on them, or by searching for them on our website. To learn more, click here. Upcoming Webinars. NOV 15, NOV 16, NOV 17, Upcoming Virtual Events. DEC 01, DEC 07, JAN 25, FEB 23, MAR 10, Cell-ebrate T-Shirt. Men's Women's. Linear momentum is well understood by most people.
An object that is moving tends to keep doing so with the same direction and speed unless it is acted upon by an outside force. When this happens, the speed or direction change in an intuitive way. Angular momentum is similar but the vector representing its direction is aligned with the spin axis. When a force acts on a spinning object it acts on this vector just as it would in a linear case.
The difference is that the resulting momentum change is not in the direction of the force but at right angles to both it and the momentum vector. Any spinning object will take on gyroscopic characteristics but the effect is accentuated if the object is made with more mass that is concentrated further from the spin axis. This gives the spinning object more angular momentum.
The most efficient gyroscope designs use a heavier and more concentrated mass that is balanced about a low friction pivot point. The primary quality of a gyroscope is that it is stable.
Once a gryo is spun, it tends to remain in the same orientation and any force applied to reorient the spin axis is met with a resistive force. This is known as conservation of angular momentum. Just as a speeding car tends to continue on its path unless an overwhelming force changes its momentum, a spinning top tries to keep spinning with its axis oriented in the same direction. Gyroscopes are used extensively as instruments in inertial reference devices. Interviews Answers to Science Questions.
Pages: [ 1 ] Go Down. Do gyroscopes defy gravity? Jon Francis OP Jr. Why do gyroscopes resist the effect of gravity?
Hi Jon. Gyroscopes do not "resist gravity" although the behaviour of a precessing gyroscope moving slowly around a pedestal may look unnatural. In fact they completely obey Newtonian physics. All the weight of the gyroscope is transferred through the pedestal to the base. Professor Laithwaite, in the s I think carried out some poorly designed experiments which claimed to show otherwise, however these were later discredited.
However, there can be complex relativistic effects to do with gravity related to large spinning masses. The effects are still subject of some speculation and are under investigation with specific orbiting satellites designed to detect the very small effect. See Gravito-magnetics for more detail nothing to do with magnetism but called this by analogy with electro-magnetics. Seems to me more a matter of inertia and the stability of a spinning mass than it does gravity Regards Charles.
Without going into the formulae for momentum it's as such. Visualize a non-spinning gyroscope falling.
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