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Gravity
One of the four fundamental interactions, gravity is responsible for the fact that any objects with mass attract one another. According to general relativity, it is a space time curvature, but according to quantum mechanics it is the result of exchanges of virtual gravitons.
4,784 Questions
How much force does a 10kg marble exert on the ground?
Please multiply the mass by the gravity. On Earth, the gravity is approximately 9.8 newton/kilogram (= 9.8 meters/second2).
Why are Wooden sleepers kept below the railway line according to gravitational force?
to have a balance to both the lines ,so that the train can start ,run and stop easily
How was the problem of escaping earth's gravity solved?
First you need to caluclate the escape volocity. Calculating an escape velocity 1. Determine the mass and radius of the planet you are on. For Earth, assuming that you are at sea level, the radius is 6.38x10^6 meters and the mass is 5.97x10^24 kilograms. You will need the gravitational constant (G), which is 6.67x10^-11 N m^2 kg^-2. It is recommended to use metric units. 2. Using the above data, calculate the required velocity needed to exceed the planet's gravitational force. The object must have greater energy than the planet's velocity as follows: V(escape)= squareroot[(2GM)/r] where "M" is the mass of the earth, "G" is the gravitational constant(6.67x10^-11) and "r" is the radius from the center of the planet(6.38x10^6). 3. Accelerate the mass to the escape velocity. It is optimal to accelerate it perpendicular to the ground, assuming it is level. Accelerating the mass at an angle other than 90 degrees with respect to the ground will require a greater velocity such that V(escape)=V(actual)*sin(theta), where theta is the angle between the ground and the projected acceleration vector. 4. The escape velocity of Earth comes to about 11.2 kilometers per second or 25000 miles per hour from the surface.
What is the big idea of cheerleading?
Cheerleading is a big idea! Cheerleading is HARD work, you dont even know! its not just looking pretty and cute in short skirts and belly tops. It's cheering your team on.
Centre of gravity of a irregular lamina?
The center of gravity of an irregular lamina is the point at which the entire weight of the lamina can be considered to act. It can be determined by balancing the lamina on a point and finding the point of equilibrium. Mathematically, it can be calculated by finding the weighted average of the x and y coordinates of all the points on the lamina.
When and where was gravity discovered?
Gravity was always present, however it was first formally described/quantified by Issac Newton at his house at Woolsthorpe-by-Colsterworth, in England in December 1684 (when the first description was entered in the Royal Society archive).
What would cause an object to have smaller acceleration?
An object would have smaller acceleration if the net force acting on it is smaller. This could be due to a decrease in the magnitude of the force applied, an increase in the mass of the object, or the presence of opposing forces that balance out the applied force.
Gravity is a fundamental force that extends infinitely in space. Its strength decreases with distance, following the inverse square law. In practical terms, the effects of gravity diminish as you move farther away from a massive object such as a planet or star.
