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If you are in a spaceship in the middle of nowhere in space. (minimum gravity) Nothing would weigh anything, right? So if someone punches you in the face with their (wieghtless) fist, will it hurt?
Jarle said:If you are in a spaceship in the middle of nowhere in space. (minimum gravity) Nothing would weigh anything, right? So if someone punches you in the face with their (wieghtless) fist, will it hurt?
Jarle said:If you are in a spaceship in the middle of nowhere in space. (minimum gravity) Nothing would weigh anything, right? So if someone punches you in the face with their (wieghtless) fist, will it hurt?
ZapperZ said:A mass is defined independent of whether it has any weight.
Jarle said:But i heard that hammering a nail in a piece of wood, would be much harder on the moon due to its low gravity. would this mean that it would be almost impossible at a place with extremely low gravity? Is the reason then that the hammer is weightless, or something else?
The best way I've seen to notice inertia decoupled from weight is with a grocery cart or other similar cart (like a cart at Ikea). At Ikea, all 4 wheels are castors, so they swivel. You aren't supporting the weight of what is in the cart, yet the more you put in the cart, the harder it is to accelerate/decelerate it. And with one of those carts at Ikea, if you have a bunch of unassembled furnature in it, get some decent speed, then go to turn, you'll find that it will spin, but it will not turn unless you orient yourself perpendicular to its direction of motion. That resistance to change in velocity is inertia.Jarle said:i don't understand this! inertia?
Jarle said:i don't understand this! inertia?
Gravity is a fundamental force of nature that causes objects with mass to attract each other. It is responsible for keeping planets in orbit around the sun and objects on Earth from floating off into space.
Yes, there is a minimum gravity. The minimum amount of gravity required to hold an object in place is called the escape velocity. This varies depending on the size and mass of the object.
The minimum gravity on Earth is 9.8 meters per second squared. This is the force of gravity that keeps objects from floating off the surface of the Earth.
No, gravity cannot be turned off. It is a fundamental force of nature and is always present. However, its strength can be weakened by distance or by the presence of other objects with mass.
Zero gravity, also known as microgravity, can be experienced in space where there is very little resistance to gravity. However, there is always some level of gravity present, even in space.