wanna ask a basic question. let say there is an apple , 1. there is a force of Earth on apple 2. there is force of apple on earth. these two are equal but in opposite direction. So where is the gravity from ? i mean what i have in mind is the force of Earth on apple = gravity. i know i am wrong...
ok. i think i got the idea. so the force which make the car still on the ground is gravity (whenever it is off the ground gravity will force it to come on the ground). But looking at the force experienced by the track/ road or whatever it is , this force is influenced by the car's velocity. The...
Actually what i had in mind is a car going over a hill.
and i understand that with enough velocity the car will be off the ground
but the thing that still confuses me is :
lets say when the car is speeding up, the normal force experienced by the car is getting smaller and smaller. and if it's...
No, I am from melbourne, australia :)
oh ok , so if i think of a car travels in a circular path, the centripetal force is its gravity and the force which balances it is its normal force right ? but when the car goes too fast, thus, the force in tangential direction is so large that the...
This might be silly question for some people, yet better to ask than don't know the answer :(.
so the thing is , i know that centripetal force holds a thing to keep running on a path,
but when i think of Earth and all those planet which surround it, the centripetal force is gravity right ? and...