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For circular motion to occur, there must be a centripetal force( a force that is always directed towards the centre of the circle).
The centripetal force is defined as F = mv2/r
Where F is the centripetal force, m is the mass of the orbiting body, v is the velocity of the body, and r is the distance to the centre of the circle.
If you whirl a conker above your head, the centripetal force is provided by the tension of the string. For a planet orbiting the sun, the centripetal force is provided by gravity.
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How much work may be done on a body that moves in a circle with constant speed?
If there's a body moving in a circle with constant speed, and you come along and do work on it, then either its speed will change, or it will depart from the circle, or both. The force that's keeping it on the circular path is not doing any work on it.
What is required to keep a body in circular path?
A centripetal force - that is, a force that accelerates the body towards the center of the circle.
How centripetal force equals to gravitational force?
The centripetal force is equal to the gravitational force when a particular body is in a circle. For a body that is in an orbit, the gravitational force is equivalent to the centripetal force.
What supplies the effort or input force when the body moves?
muscles
What is present when work is done?
In physics work is dome when a force acts on a body and the body moves in the direction of the force.
Primary force that moves blood?
The heart is the primary force that moves blood through the body. As the heart contracts and releases the blood is then pumped through the vessels that travel to all areas of the body.
When constant force is applied to a body then it does it moves with uniform speed?
velocity
What will happen when two unbalanced force are exerted in the same direction?
a force, which is the sum total of the two unbalanced forces, acts on the body and the body moves in the direction of the force.
Give an example of an object that 1 moves and 2 has a force exerted on it but no work is performed on the object?
A body in a circular orbit around the earth or sun is moving. There is a gravitational force attracting it towards the central body, but gravity does no work on it. Since the orbit is circular, the object never moves toward the central body, so the force of gravity never moves it through a distance in the direction of the force.
Why a body moves in a circular motion?
A body will move in circular motion if there is a force to accelerate it towards the center.
Which body moves faster heavier or lighter?
The answer depends on the force applied to the bodies.
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.
