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Why does a satellite move without the need of force to push it?
Wiki User
∙ 12y ago
Contrary to both intuition AND Aristotle, objects do NOT need a force to continue moving. If an object has no force on it whatsoever, it will continue to move in exactly the way it has before. Satellites continue in circular orbits because there is (pretty much) no friction on them.
Wiki User
∙ 12y ago
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Why you need large force to move box without wheels?
due to friction.
When an object move are the force acting on it?
Not necessarily. An object doesn't need a force to move, only to CHANGE its velocity. In empty space, an object can continue moving indefinitely without any force.
Does a satellite need fuel to keep moving?
Satellites do not need fuel to keep moving because of their inertia and the centripetal force.
Why do you need to use force to move a ball up a ramp when it moves downward by itself?
The force of gravity makes the ball move downward. To move it upward, you need to supply enough force to compensate for this (to stop the downward motion) plus a little extra (to cause the ball to move upward).
Who needs a bigger force to keep them moving a man or a child?
It depends. If you want to lift them up, you have to act a force equal to their weight, so a heavier person would need a force with greater magnitude. If you want to move them horizontally on a plane with friction the heavier person needs a force with greater magnitude again. On a plane without friction no force needs to be acting on them in order to move.
Why a person can't jump without bending legs?
To jump, you need the force of your leg muscles pushing off of the floor to move you into the air. Without bending your knees, you can't use your leg muscles.
To make something move what kind of force do you need?
You need Potential (stored) Energy
What do you need to move an object from one place to another?
A force (energy)
Why does the input force have to be greater than the force need to lift the bale?
If the force is not greater than the weight of the bale, the bale will not move.
Centrifugal force is the force that?
Centrifugal force is the outward force of a rotating object. The opposite force is the centripetal force which maintains the object in it's rotational position. In the case of an orbiting satellite it's rotational speed (revolutions per time period) creates the centrifugal force required to overcome the gravitational pull (centripetal force) of the body it is orbiting. ================================== The first answer is a neat, tidy, well-written summary of perhaps the most popular misconception in all of elementary Physics. Centrifugal force is a concept made up to account for the sensation of force that we perceive when we move in a curve. There need not be any outward force on a rotating object, and in general there is none. Centripetal force is real. It's the force required to bend the path of a moving abject away from a straight line. There is no outward force on an orbiting satellite. No force is required, and none exists, to 'overcome' the centripetal gravitational pull. In fact, if there were a force that overcame the gravitational centripetal force, then the forces on the satellite would sum to zero and it would travel in a straight line.
Why the output force exerted by a rake must be less than the input force?
because you need the force to move it over some distance
Why the output force exerted by a rake must be less than input force?
because you need the force to move it over some distance
