Recent content by great_scott

how do i creat more tension with no additional force? and obviously as the washer goes up it gains some more potential energy so there has got to be a net force that does some work against gravity by raising the washer? i can actually put it that way what force makes the rope break when i whirl...

i have two questions i think are asking almost the same thing. 1) in this typical centripetal force experiment; there are a stopper mass attacthed to one end of a rope and a washer attached to the other end of the rope. as the washer hangs straight down, i start whirling the stopper. after a...

thank you all. it's so clear and satisfactory.

can you please tell me what is the minimum force to move the Earth off its orbit, doesn't matter what direction? there is no collision, no impacting, no touching but just a force acting on the Earth to move it off its orbit. I am sure you can easily calculate how much force is needed to do that...

lets say the asteroid had been pushed toward the Earth before it started moving toward the Earth so the Earth's gravitational force is not the only reason why the asteroid is about to hit the earth. i know your explanation with momenta will still aplly. but there will be a force on the Earth...

thank you for your responses. i always have some language barriers when it comes to talk to native english speakers about science or philosophy. i think that's why you guys thought i was talking about momentum. I am really sorry about that. i know we all can easily prove why the Earth has to...

It should be noticeable in years. Because there is no deacceleration, and also because of Newton's first law of motion the Earth will keep moving in the same direction as the acceleration is, even if the acceleration is canceled and gone by chance for instance another impacting asteroid creating...

Hello people, this is my first time on here so i hope I am posting this in the correct category. if not I am sorry. Im a phd student in high energy physics and am to be a doctor by this summer. but i do have some basic questions i can't answer and that make me hate myself. i need to know what...