mass, velocity and gravity

[tommo123]

probably a stupid question but dead in work so figured i'd ask

the amount of mass dictates an objects gravity no? if you compare something with the mass of a moon (like a moon i guess :whiste: ) with a grain of sand then the moon wins out but if the grain of sand kept going faster and faster then at some point would its mass increase to a point that it would have the same gravitational pull as the moon? (ignoring that if it was moving that fast it would be zipping by things too quickly to really affect them?)

 

[Pulsar]

probably a stupid question but dead in work so figured i'd ask

the amount of mass dictates an objects gravity no? if you compare something with the mass of a moon (like a moon i guess :whiste: ) with a grain of sand then the moon wins out but if the grain of sand kept going faster and faster then at some point would its mass increase to a point that it would have the same gravitational pull as the moon? (ignoring that if it was moving that fast it would be zipping by things too quickly to really affect them?)

Mass doesn't increase as speed does. A fast moving grain of sand has the same mass as a non-moving grain of sand. Go actually learn about special relativity and you'll understand more.

 

[who?]

As the grain of sand moves faster the force it would create upon hitting something and having a large negative acceleration would be larger but that force would not be gravity.

 

[witeken]

https://www.youtube.com/watch?v=n_yx_BrdRF8

 

[ctbaars]

^ Great video! Thank you