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Work is done whenever the given two conditions are satisfied:
(i) A force acts on the body.
(ii) There is a displacement of the body by the application of force in or opposite to the direction of force.
If the direction of force is perpendicular to displacement, then the work done is zero.
If the satellite is in a perfectly circular orbit, then the force of gravity is always
perpendicular to the satellite's velocity, and gravity never does any work.
If the orbit isn't circular, then there is a radial component of velocity at most points in
the orbit, and some gravitational acceleration, work, etc., but those are exactly matched
by negative values at other points in the orbit, and the total over a complete orbit
is zero again.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoDuring the time that the rocket motors or attitude thrusters are firing, an astronaut in space is acted on by the force of the acceleration of his spacecraft against his body. At all times, the astronaut is acted upon by a gravitational force in the direction of every piece of mass in the universe. The nearer, more massive bodies cause greater forces of attraction, while the farther, less massive bodies cause lesser forces. Even when he is not in space, the astronaut, as well as you and I, experience those same forces at all times. You and I may also be acted upon by the force of the atmosphere, such as when the wind blows, but the astronaut in space isn't.
Wiki User
∙ 10y agoAnything in motion continues moving in a straight line at a constant speed,
unless an external force acts on it. That's what would happen to satellites if
there were no force to bend their straight-line path into a curve around the
Earth. The force is the gravitational attraction between the Earth and the
satellite, and it's a 'centripetal' one because it always attracts the satellite
toward the 'center' of the Earth.
Wiki User
∙ 7y agojust one, gravity. The velocity of the satellite keeps it rotating.
Wiki User
∙ 10y agoThe direction at which it moves. Since velocity is made up of a speed and a direction, you might also say that it changes the satellite's velocity.
Wiki User
∙ 10y agoCentripetal Force
Gravity!
Gravity
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Why do astronauts need artificial gravity when in space?
kmh
What are the release dates for The Outer Limits - 1995 Caught in the Act 1-16?
The Outer Limits - 1995 The New Breed 1-14 was released on: USA: 23 June 1995
How are strong nuclear and weak nuclear forces alike?
They are the shortest range of the four forces, unable to act outside the diameter of the atomic nucleus.
What name was given to the fight between proslavery and antislavery forces following the passage on the Kansas Nebraska act?
bleeding Kansas > Apex. ;)
Do astronauts have to wear their space suits all the time?
No only in space. Two reasons first space is almost zero kelvin and they would die instantaneously and second there is no air in space. while inside the shuttle or whatever there staying in there is air bathrooms food water and above all its not almost zero kelvin.
What is concurrent forces in space?
When all the forces of a force system act in one plane it is called coplanar force system. If the forces act in more than one plane then it is forces in space. In this case forces are not contained in one plane. When all the forces of a system pass through a common point they are called concurrent forces. Thus we have concurrent coplanar forces when all forces are in one plane and pass through a common point. Also when forces in space pass through a common point we have concurrent forces in space.
What is the space around a charged object where electric forces act?
circuit
What forces act on a space shuttle when it lands?
Mainly gravity and air drag
Do things slow down as quickly in outer space as it does on Earth?
Usually not. To slow a moving object down, some force must act on the moving object. On Earth, this force is usually friction. In outer space, there is no significant amount of friction, so moving objects tend to continue moving, unless they are slowed down by OTHER forces, such as gravity.
Why astronauts in space for several months suffer from muscular weakness?
Their muscles slowly weaken because they do not have to act against the forces gravity in the Zero-Gravity environment of space.
What force is acted on by another?
Forces don't act on other forces - forces act on objects.
Do forces always act on objects?
In theory, no but in real life, there is always some object whose gravitational force acts on the object. Even if you were in the vacuum of outer space, quantum fluctuations would result in pair of matter and anti-matter appearing and disappearing. But during their fleeting existence they would result in tiny, tiny, tiny gravitational forces acting on you.
When was Caught in the Act - The Outer Limits - created?
Caught in the Act - The Outer Limits - was created on 1995-07-01.
What do electric forces act between?
Electrical forces act between separated charges.
What is some examples of long range force?
Long range forces are forces that act over a long distance, like electric forces, magnetic forces, or gravity.Long range forces are forces that act over a long distance, like electric forces, magnetic forces, or gravity.Long range forces are forces that act over a long distance, like electric forces, magnetic forces, or gravity.Long range forces are forces that act over a long distance, like electric forces, magnetic forces, or gravity.
What is the purpose of the outer jacket on fractionating column?
The outer jacket act as an insulator.
Is a body in motion stays in motion?
That depends. If no forces act on the object, it will. If forces do act on the objects, such forces may change the object's velocity.
