The Centripetal Force
The Centripetal Force
The force associated with Torque T is always perpendicular to the torque motion, T=FxR.
No. At least not by the force that's perpendicular to the motion. When you push a baby stroller (or a car), you do work, but the force of gravity, downward and perpendicular to the motion, doesn't.
That's only true when the object is in circular motion.The circular motion is the result of a force (which produces acceleration)that's always perpendicular to the object's velocity.Like the gravitational force between the Earth and a geostationary satellite,or the tension in the string of a yo-yo that's doing circles.
In circular motion the object travels in the circular trajectory because of the centripetal force exerted on it. Otherwise the velocity is always in tangential direction which means that stopping the centripetal force can send the object in a straight path.
The Centripetal Force
The force associated with Torque T is always perpendicular to the torque motion, T=FxR.
If the velocity of the satellite is always perpendicular to the force of gravity, then the eccentricity of the orbit is zero, and it's perfectly circular.
No. At least not by the force that's perpendicular to the motion. When you push a baby stroller (or a car), you do work, but the force of gravity, downward and perpendicular to the motion, doesn't.
That's only true when the object is in circular motion.The circular motion is the result of a force (which produces acceleration)that's always perpendicular to the object's velocity.Like the gravitational force between the Earth and a geostationary satellite,or the tension in the string of a yo-yo that's doing circles.
Have the force at a constant right angle to the motion. (Centripetal force always acts at right angles to the motion of the object, this is what makes it go around in a circle)
Circular motion doesn't produce force. 'Centripetal force' is necessary in order to produce circular motion. Also, so-called 'centrifugal force' isn't a force at all.
Work is equal to Force * displacement * cos(angle between force and displacement). When there is uniform circular motion, the displacement is in the same direction as the velocity: along the tangent of the circle. The centripetal force always points towards the center of the circle. These two directions (vectors) are perpendicular to each other (90 degrees). Cos(90) = 0, so the work is 0.
In circular motion the object travels in the circular trajectory because of the centripetal force exerted on it. Otherwise the velocity is always in tangential direction which means that stopping the centripetal force can send the object in a straight path.
Centrifical force.
circular motion
A body can execute circular motion only if there's a force acting on it, directedtowards the center of the circle. Without that force, circular motion isn't possible.If you expected us to get into "centrifugal" force, forget about it. No such force exists.