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An object moves in a circle at constant speed. The work done by the centripetal force
is zero because:
1. the displacement for each revolution is zero
2. the average force for each revolution is zero
3. there is no friction
4. the magnitude of the acceleration is zero
5. the centripetal force is perpendicular to the velocity
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Is Work done by centripetal force is zero?
An object moves in a circle at constant speed. The work done by the centripetal force is zero because: 1. the displacement for each revolution is zero 2. the average force for each revolution is zero 3. there is no friction 4. the magnitude of the acceleration is zero 5. the centripetal force is perpendicular to the velocity
Why work done by centripetal force during half rotation is zero?
work done is zero because force is toward the centre and distance is tangent to the circle so cos90 is equal to zero.[abbasia]
When is work done though displacement is zero?
When an object is propelled by a non-centripetal force through a closed path.
Can a centripetal force ever do work on an object. explain?
Centripetal force refers to the force that acts on a body moving in a circular path. It does not do work on an object because it acts perpendicular to the motion of the body. The work done on a rotating object is zero.
What are the conditions of zero work?
Hello word performed is got by the expression F s cos@ If F ie force is not applied at all then no work could be performed. If s ie displacement is zero then work is not done thought force is acting Thirdly if @ is 90 deg, ie the angle between the force applied and displacement made is 90 deg, then no work is said to be done by the force. This is the case the work performed by centripetal force on a rotating body.
When body moves in a circular path how much work is done by the body?
Zero. This is because when a body when around in a circle, a centripetal force acts on the particle to keep it at that fixed distance from the centre. At each point, the force and the displacement are perpendicular to each other. Hence no work is done. The answer is NOT Zero! A Force is required in the direction of motion around the circle. At every point (an infinite number of them) there must be a Force PERPENDICULAR to the Centrifugal and Centripetal Forces or the object would not move. Therefore the amount of work done is the product of that FORCE times the circumference of the circular path, if only considering one revolution.
What is work done if there is nodisplacement is 0?
Work Done = Force x Displacement, so if the displacement is zero, the work done will be zero. There will be no work done.
Is it possible workdone is zero although body is moving?
Yes, if no force is applied. Work = force x distance, so if the force is zero, no work is done.Yes, if no force is applied. Work = force x distance, so if the force is zero, no work is done.Yes, if no force is applied. Work = force x distance, so if the force is zero, no work is done.Yes, if no force is applied. Work = force x distance, so if the force is zero, no work is done.
Centrifugal force is reactionary force of centripetal force?
Yes true. But they need not be got cancelled though their resultant is zero.
Example of force that moves but does no work?
work = force . distance. Since Force and distance are both vectors (work is the dot product), when the net distance = 0 (back to the point of origin), work = 0. That is, if the force is such that it moves the object back to the point of origin, it has done zero work. A centripetal force is one example. The distance = 0 when the object finishes one complete revolution. No work has been done since the beginning of the revolution.
When is workdone by force is zero?
work done on an object zero by a force would be zero isif the displacement of the object is zero
What is the difference between negative work and zero work and positive work done?
If the angle between the displacement and force applied is less than a right angle, then it is Positive Work done. If the angle between the displacement and the force applied is greater than a right angle then it is Negative Work done. If the displacement and force are at right angles, or either is zero, then it is Zero Work done.
