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9.81 is the acceleration due to the force of gravity experienced by bodies on or about the surface of the earth (nominally at sea level) the units are meters per second / per second, that is to say a stone dropped from a height will gain 9.81 m/s velocity for every second it falls (is in freefall)
however , if you move from the earths surface , this figure will diminish, an example being : if you double your distance from the earths centre you will experience 1/4 of the acceleration (or force) you experienced at the surface
What else can I help you with?
What is the accelaration speed of gravitational force?
The acceleration due to gravity on Earth is approximately 9.81 m/s^2. This means that any object near the Earth's surface will accelerate towards the ground at this rate due to the force of gravity.
Value of accelaration due to gravity at the centre of the earth?
The acceleration due to gravity at the center of the Earth is zero. This is because the mass of the Earth is evenly distributed around you at the center, pulling on you with equal force in all directions, effectively canceling each other out.
How does accelaration due to gravity effect the time period of a simple pendulum?
Normally the acceleration of gravity is not a factor in the period of a simple pendulum because it does not change on Earth, but if it were to be put on another celestial body the period would change. As gravity increases the period is shorter and as the gravity is less the period is longer.
How convert mass to weight?
You convert mass to weight by multiplying by the local acceleration due to gravity ...f = ma... where f is the force in newtons, mass is the mass in kilograms and a is the acceleration in meters per second squared. For the Earth, a is 9.81, so a mass of 100 kg has a weight of 981 newtons.It is "common" though erroneous to say that the "weight" of the 100 kg object is 100 kg. It is precisely correct to say the weight is 981 newtons, on the Earth, but we generally accept the implicit conversion for G=9.81 in the statement that the weight is 100 kg, just not on a physics test.
What are the horizontal components of accelaration of a body when thrown horizontally with unifornm speed?
When a body is thrown horizontally with uniform speed, there is no change in the horizontal velocity, so the horizontal component of acceleration is zero. The only acceleration acting on the body is due to gravity in the vertical direction.
Why accelaration due to gravity on moon is less than accelaration due to gravity on earth?
Because the earth is much more heavier than the moon.
Is accelaration due to gravity is constant?
yes and its 9.8m/s2
Does the value of accelaration due to gravity increases in winter?
No. There's no reason to expect that to happen.
How can gravity be not held responsible for people falling in love where as accelaration due to gravity acts on them?
because they don't fall they actually bends...
What is the accelaration speed of gravitational force?
The acceleration due to gravity on Earth is approximately 9.81 m/s^2. This means that any object near the Earth's surface will accelerate towards the ground at this rate due to the force of gravity.
Value of accelaration due to gravity at the centre of the earth?
The acceleration due to gravity at the center of the Earth is zero. This is because the mass of the Earth is evenly distributed around you at the center, pulling on you with equal force in all directions, effectively canceling each other out.
What mathematical relationship applies between the pendulum length and the oscillation period?
t = 2*pi*sqrt(l/g) Where t is the period, l is the length and g is the accelaration due to gravity.
What were Galileo's discoveries accepted In the scientific World?
His discovered that 2 objects of an mass fall at the same time due to accelaration due to gravity. A greater force must be forced on the larger object so both objects of different masses can land at the same time.
If you were given the length width and weight of an object could you find the volume of the object?
No. You need the length, width and height. If you had weight but not height, you would need the density (or the specific gravity). Strictly speaking, you need mass, not weight because with weight you would also need the accelaration due to gravity.
How does accelaration due to gravity effect the time period of a simple pendulum?
Normally the acceleration of gravity is not a factor in the period of a simple pendulum because it does not change on Earth, but if it were to be put on another celestial body the period would change. As gravity increases the period is shorter and as the gravity is less the period is longer.
How convert mass to weight?
You convert mass to weight by multiplying by the local acceleration due to gravity ...f = ma... where f is the force in newtons, mass is the mass in kilograms and a is the acceleration in meters per second squared. For the Earth, a is 9.81, so a mass of 100 kg has a weight of 981 newtons.It is "common" though erroneous to say that the "weight" of the 100 kg object is 100 kg. It is precisely correct to say the weight is 981 newtons, on the Earth, but we generally accept the implicit conversion for G=9.81 in the statement that the weight is 100 kg, just not on a physics test.
What are the horizontal components of accelaration of a body when thrown horizontally with unifornm speed?
When a body is thrown horizontally with uniform speed, there is no change in the horizontal velocity, so the horizontal component of acceleration is zero. The only acceleration acting on the body is due to gravity in the vertical direction.
