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Rotation
Classical mechanics doesn't just describe how an object's position behaves under external influences, but also how its orientation behaves. Using the same principles found in Newtonian mechanics, laws and relations governing rotation can also be derived. Please direct all your questions about moments of inertia, angular velocity, angular momentum, centripetal force, centrifugal force, torque, and spin here.
500 Questions
How does the Coriolis force effect modify air movement?
Asked by Wiki User
In the Northern Hemisphere, the Coriolis force deflects winds to the right. This causes hurricanes and typhoons to spin counterclockwise. In the Southern Hemisphere, the Coriolis force deflects winds to the left. This causes hurricanes and typhoons to spin clockwise.
Affects of rotation of the earth when shooting a gun?
Asked by Wiki User
The rotation of the Earth has a negligible effect on a bullet fired from a gun. While the Earth rotates at a speed of around 1670 kilometers per hour (1037 miles per hour) at the equator, bullets travel at much higher speeds. Typically, bullets travel at speeds of several hundred to a few thousand kilometers per hour, making the influence of the Earth's rotation on their trajectory insignificant.
What is an angular speed of a rotating body?
Asked by Wiki User
Angular velocity is given as radians per second; angular speed is also the same thing. Velocity is a vector with magnitude and direction and speed a scalar with magnitude only. The magnitude is identical; velocity will define the direction of rotation ( clockwise or counterclockwise).
If a airplane is traveling 600 mph and the earth is traveling 1000 mph how do you get from one point to another when traveling in the same direction as the rotation of the earth?
Asked by Wiki User
When the Earth is traveling, everything on the Earth is traveling with it, in the same frame of reference.
For example, when you are in a car or an airplane and you flip a coin in the air, the coin doesn't shoot backwards. Or, notice that when you jump upwards that the Earth didn't move from under you when you jumped.
How is torque different from other forces?
Asked by Guye17
Torque, also called moment or moment of force, is the tendency of a force to rotate an object about an axis,fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist.In more basic terms, torque measures how hard something is rotated
Centripetal force is a force that makes a body follow a curved, as opposed to straight, path; it is always directed orthogonal to the velocity of the body, toward the instantaneous center of curvature of the path.
Friction can be reduced by changing over from sliding to rolling or rolling to sliding?
Asked by Wiki User
How does a change in radius effect linear velocity?
Asked by Wiki User
For circular motion, linear speed = angular speed (in radians) x radius. How the radius affects speed depends what assumptions you make about the problem. For example, if you assume the radius increases but the angular speed does not, then of course the linear speed will increase.
What force is a fictitious force that some people believe causes you ti feel as if you are being pushed outward from the center of a circle while traveling in uniform circular motion?
Asked by Wiki User
That refers to the centrifugal force.
When one walks forward he interacts with the earth what is the momentumm of the recoil of the earth why don't we feel it?
Asked by Wiki User
Without getting into the difference between linear and angular momentum,
it should be enough to simply point out that the Earth's mass is equal to
the mass of something like 60 thousand billion billions of you, and that for
equal momentum, the velocities would be in the inverse of the same ratio.
What is the best example for conservation of angular momentum?
Asked by Wiki User
In case of Russian dance, the dancer will spin her body about the vertical axis passing through her toe. If she keeps extending her hands then number of rotation and so angular velocity will be less. If she brings her hands close to her body then number of rotations would increase. Same scene could be enjoyed in case of circus with girls hanging just with a tight hold with their teeth.
Can a body moving in variable speed move in circle?
Asked by Wiki User
Yes, if it's constrained to the circular path. YOUR body does that on several amusement-park rides.
How is centripetal force affected by mass?
Asked by Wiki User
Centripetal force = mv2/r, where m is mass, v is the velocity, and r is the radius
What are the magnitude of the angular velocity and the angular accelaration of the second hand of a clock?
Asked by Wiki User
-- The angular velocity is
one revolution/minute = 360 degrees/minute = 6 degrees/second .
(2 pi) radians/minute = pi/30 radians per second . -- If the clock is working properly ... not starting, stopping, speeding up, or
slowing down ... then the angular acceleration of any of its hands is zero.
Which component of linear momentum does not contribute to angular momentum?
Asked by Wiki User
Angular momentum is defined as the moment of linear momentum about an axis. So if the component of linear momentum is along the radius vector then its moment will be zero. So radial component will not contribute to angular momentum
What has angular momentum?
Asked by Wiki User
Anything that's spinning, rotating, tumbling, or traveling in a
closed path around something else, has angular momentum.
Is it possible to calculate the torque acting on a rigid body without specifying the axis?
Asked by Wiki User
Not at all possible. Torque defined as the moment of the force about a point or an axis of rotation. Torque tau vector = radius vector x Force vector. Radius is to be measured only from a given point or given axis. Hence axis in very important
What is the angular displacement of six revolutions?
Asked by Wiki User
1 all-the-way-around is 360 degrees
2 revolutions = 720 degrees
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6 revolutions = 2,160 degrees
