can centripetal force do work?
318552
So if an object is moving in a horizontal circle at constant speed, the centripetal force does not do work and cannot alter the total mechanical energy of the object. ... In fact, whenever the unbalanced centripetal force acts perpendicular to the direction of motion, the speed of the object will remain constant.
1005157
Sometimes objects move in a curved or circular path. While an object moves due to velocity, or its speed in a certain direction, centripetal force is the force that keeps the object moving in a circular path. It does this by pulling an object toward the center of a circle.
430890
The direction of the net force is in the same direction as the acceleration. So for an object moving in a circle, there must be an inward force acting upon it in order to cause its inward acceleration.
1151628
The force and distance must be parallel to each other. Only the component of the force in the same direction as the distance traveled does any work. Hence, if a force applied is perpendicular to the distance traveled, no work is done. The equation becomes force times distance times the cosine of the angle between them.
393277
Explanation: The longer answer is a little more complex, since that makes it look as though the centripetal force is inversely proportional to the radius of the circle if the speed is expressed linearly as metres per second and directly proportional if the speed is measured radially as radians per second.
150348
Angular acceleration separates itself from the others: 1) Because it is an angular quantity, whereas the other two are linear quantities. ... No centripetal acceleration means the object is not moving in a circle. o Centripetal acceleration results from the change in direction of the tangential velocity.
481000
us/senˈtrɪp·ə·təl/ physics. describes a turning object that is moving toward the point around which it is turning. centripetal force (also centripetal acceleration) Centripetal force is the force that pulls an object that is moving in a circle toward the center of the circle.
347504
Centripetal force is perpendicular to velocity and causes uniform circular motion. The larger the Fc, the smaller the radius of curvature r and the sharper the curve. The second curve has the same v, but a larger Fc produces a smaller r′.
631363
No. It can not exist. Static or sliding frictions are always there acting on the object. Frictional force and the applied force are always in opposite direction.
714485
"You are correct - the centripetal acceleration (Ac) decreases as the distance from the axis of rotation (or radius) increases (if angular velocity remains constant). ... If the curve is very sharp (small radius), the object changes direction very quickly and (for a given velocity) Ac is higher.
1278481
Centripetal Force is the force towards the center of curved path. ... Centripetal acceleration is the acceleration in an object traveling in a curved or circular path. For example, a car on a curved road is accelerating toward the center of the curve arc.
471011
A good, precise protocol for centrifugation instructs you to use the g force rather than RPMs because the rotor size might differ, and g force will be different while the revolutions per minute stay the same. ... Therefore, you have to convert g force (RCF) into revolutions per minute (rpms) and vice versa.
272663
Centripetal force is measured in Newtons and is calculated as the mass (in kg), multiplied by tangential velocity (in meters per second) squared, divided by the radius (in meters). This means that if tangential velocity doubles, the force will quadruple.
248160
Note that the centripetal force is proportional to the square of the velocity, implying that a doubling of speed will require four times the centripetal force to keep the motion in a circle.
1094551
A centripetal force is a net force that acts on an object to keep it moving along a circular path. ... It is important to understand that the centripetal force is not a fundamental force, but just a label given to the net force which causes an object to move in a circular path.
1133263
Mass, velocity, and radius are all related when you calculate centripetal force. ... The equation shows that if you increase mass or speed, you'll need a larger force; if you decrease the radius, you're dividing by a smaller number, so you'll also need a larger force.
341920
Centripetal acceleration (a) is measure in metres per second per second (ms-2). It is always directed towards the center of the circle. When an object moves in a circle the centripetal force (F) always acts towards the centre of the circle.