Gravity keeps the moon where it's supposed to be — in orbit. Peepo / Getty Images Gravity is a force that we experience every day, yet it remains somewhat of a mystery. It's the reason we stay grounded on Earth and why objects fall when dropped. Although there are several theories ...
What is the motion of your hand as you create the pulse? Explain why one cannot find the north pole of the earth using only a simple compass. Why does a magnetic compass needle not work in submarines? How acceleration due to gravity is used to benefit mankind?
General relativity is a physical theory about space and time and it has a beautiful mathematical description. According to general relativity, the spacetime is a 4-dimensional object that has to obey an equation, called the Einstein equation, which explains how the matter curves the spacetime. Wh...
The equation for the gravity between many objects is just the equation for the gravity between every pair added up. Not much more complicated. The whole point of physics, aside from understanding things, is to describe the rules of the universe as simply as possible. To that end, physicists ...
Weight is referred to the force acting on an object due to gravity. It depends on the intensity of the gravity. Weight is measured in newtons. On Earth, an object with a mass of 1kg weighs 9.80665 newtons.So, from the above statements we can conclude...
What is mean by the specific gravity? Density: The density of an object is defined as the mass per unit volume of that object. If {eq}m {/eq} is the mass of an object and {eq}V {/eq} is its volume, then the density of that object is defined by the following equation: ...
h is the height of the fluid above the object The pressure due to the liquid alone (i.e. the gauge pressure) at a given depth depends only upon the density of the liquid, the acceleration of gravity and the distance below the surface of the liquid. ...
A physics student might encounter gravity in physics in two different ways: as the acceleration due to gravity on Earth or other celestial bodies, or as the force of attraction between any two objects in the universe. Newton developed laws to describe bo
Well we simply imagine that if the whole mass of the body were to be concentrated at a single point where would that point be? That imaginary point is known as the center of mass of the body. We also know that whether any other force acts on a body or not, the force of gr...
I am stuck on how my teacher got to the last equation in #4. Problem Statement: A 2,000 kg rocket carrying 3000 kg of fuel is drifting in space when it...