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What is the magnitude of the force on an object in free fall near the earths surface?
Wiki User
∙ 11y ago
-- The force of gravity near the surface of the Earth is close to 9.8 newtons (2.205 pounds)
per kilogram of mass.
-- "Free fall" means no other forces acting on the object besides gravity. If that's true,
then the object's acceleration is 9.8 meters per second2 downward.
-- In reality, it's very difficult to achieve real free fall because of air resistance.
The effect of air resistance is a force on the object that depends on its speed,
shape and size, and acts in the direction opposite to the object's motion.
Considering an object in fall, the force of air resistance acts opposite to the force of
gravity. So the combined magnitude of both forces is less than the force of gravity
alone. That means the object's acceleration is something less than the acceleration
of gravity. When it reaches the speed where the force of gravity and the force of air
resistance are equal, the combined magnitude of both forces is zero, the object stops
accelerating, and falls from there at a constant speed, called "terminal velocity".
Wiki User
∙ 11y ago
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An object at rest on the earths surface has two forces acting upon it what are they and why doesnt the object move?
Gravity and the upward force of the surface the object is resting on.
Why does an object accelerate when it falls towards the earths surface?
The force of gravity pulls it down to the earth.
Is mass the magnitude of the force due to gravity on an object?
No mass is not the magnitude of the force due to gravity on an object. Mass is the stuff of which the object is composed. The magnitude of the gravitational forces between the object and Earth ... or whatever planet the object happens to be on ... is the object's "weight".
Is it true that weight affects the amount of friction between the object and a surface?
Yes. Weight, being a force perpendicular to the surface, affects the magnitude of the friction, but not the friction coefficient.
What force acts against the gravitational force that is in the upward direction?
In physics, there is a force that is called the normal force. This is the force that comes from a surface pushing up on an object. If the surface is level, the normal force is the exact same magnitude as the gravitational force, but straight up. The normal force is always perpendicular to a surface. Hope this helps!
An object at rest on the earths surface has two forces acting upon it what are they and why doesnt the object move?
Gravity and the upward force of the surface the object is resting on.
What is the gravitational force on any object near the earths surface?
Force (newtons) = mass (kg) * acceleration (m/s/s) > Acceleration at earths surface radius = 9.82 m/s/s
About how much is the Moon's gravitational force compares to the earths?
The weight of any object on the surface of the moon is 16.55% of its weight on the surface of the Earth.
Why does an object accelerate when it falls towards the earths surface?
The force of gravity pulls it down to the earth.
Is mass the magnitude of the force due to gravity on an object?
No mass is not the magnitude of the force due to gravity on an object. Mass is the stuff of which the object is composed. The magnitude of the gravitational forces between the object and Earth ... or whatever planet the object happens to be on ... is the object's "weight".
What is Murcurys gravitional force?
The acceleration of gravity at the surface of Mercury is 3.7 m/sec2. The force on a mass on the planet's surface depends on the size of the mass. The magnitude of the force, in newtons, is (3.7) times (the object's mass).
Is it true that weight affects the amount of friction between the object and a surface?
Yes. Weight, being a force perpendicular to the surface, affects the magnitude of the friction, but not the friction coefficient.
What force acts against the gravitational force that is in the upward direction?
In physics, there is a force that is called the normal force. This is the force that comes from a surface pushing up on an object. If the surface is level, the normal force is the exact same magnitude as the gravitational force, but straight up. The normal force is always perpendicular to a surface. Hope this helps!
What is the force felt when an object is placed in water?
When an object is placed in water it experiences Buoyancy force. The magnitude of force is equal to the weight of water displaced and direction is perpendicular to free surface. Buoyancy is felt due to unequal amount of forces on upper and lower surface of object. Buoyancy force will not be felt in space.. This is not true, it can be felt if the water container is accelerating.
What is the upwars force acting on an object?
The upward force acting on an object is the normal force. It is equal in magnitude, but opposite in direction to the object's weight.
What are the factors affecting the amount of work done?
The magnitude and direction of the force applied to an object, the magnitude and direction of the distance moved by the object.
What are the factor affecting the amount of work done?
The magnitude and direction of the force applied to an object, the magnitude and direction of the distance moved by the object.
