What is the force exerted on an object by gravity?

Answer 1

The force due to gravity is usually measured by a device called the Atwood machine, basically a pulley system with two unequal weights on both sides. By measuring the time it takes for the masses to fall a certain distance, the gravitational force can be calculated.

Other ways to calculate the force of gravity is the simple spring system that reciprocates the force of gravity, and knowing the distance displaced the force could be calculated, but this is less accurate than other methods. To solve for the force gravity exerts on an object, you multiply the mass of the object in kilograms * g g = acceleration of gravity = 9.8 m/s^2

Answer 2

Force = Mass * Acceleration (which is really velocity in this case, not acceleration, but the formula is F=MA). So... gravity = G = 9.8 mps². 9.8 meters per second squared (mps²) is your "acceleration". Now you need to know the Mass of your object, ie, it's weight. Keep in mind Gravity is using the Metric system, so if you know the weight of something in Pounds, you need to convert it to kilograms. Multiply the Mass by the Acceleration and you get the Force at any given time (it will continually change because the longer something falls, the faster it gets until it reaches its "terminal velocity"). Unless your question wasjust worded incorrectly and all you wanted to know was the number for gravity... that's simply 9.8 mps².

Answer 3

you could take a spring put it in an upright position and let it come to rest.

provided that you know the contraction coefficient, you can measure the distance how far it is being pushed in when you put a mass on it.

following hooke's law

f = k x

force equals a contraction coefficient (Newtons per length) and the amount of contraction from equilibrium you can find the gravitational force of the object.

F = G(m1m2/r2)

Force = Gravitational Constant times: the mass of body 1 times the mass of body 2 divided by the radius squared. Where G = (6.67428 +- 0.00067) x 10-11m3kg-1s-2

The force felt by each object is the same, any change in location or movement is based on the momentum (mass) of the objects, not on the difference of force felt. A device to measure gravitational force was created by Henry Cavendish, he created a dumbell shaped object (very thin arms, huge globes at ends) of dense homogeneous material (lead) and suspended from a thin wire so that it swung freely. There were 4 globes used 2 large and 2 small, the large were on the hanging wire. When a stop was released on the suspended dumbbell, the large balls rotated slightly towards the smaller ones. The amount of this rotation was related to the properties of the wire (how much force it took to rotate x amount.)

Answer 4

the gravitational force

Answer 5

1G

Answer 6

gravity

Answer 7

Weight!