Alright so here’s the problem. In lab we are supposed to come up with a way to figure out gravity using an experiment. The experiment that I came up with is to use a pendulum and find its period and then calculate the gravity. I know this is possible but I don’t know the equations. If anyone can...
I am but I know how to get it. The only problem is that it is the minimum height at which to drop the marble in relation to the height of the loop in order for it to travel fully through the loop. That is neglecting friction. If I take the minimum height and try and drop it its not going to make...
that much i understand, the thing is my lab ta is an ass and he grades hard as hell so i need some sort of equations dealing with variables no numbers. its hard to explain what i need to figure out. maybe saying that adding a constant to the height at which you drop or something. i don't know if...
Ok I get that. That gives me the minimum distance that i have to drop the marble in order for it to fully travel around the loop. The next thing i need to figure out is what point i can drop it factoring in friction and other things. I don't want to use another formula with friction in it i just...
The potential energy at the top of the loop is mgh where h in this is the height of the loop. It doesn't matter what the potential energy is at the top of the loop i just need to figure out how to find an equation to show where to pick a point along the ramp so that the makes it fully through...
I’m having trouble with my physics lab this week. Here is the problem which we are trying to solve:
What is the minimum height at which you can release a ball in order for the ball to just make it around a loop?
The ideal situation for this would be to drop it from a height at which the normal...
Im having trouble with a part of a problem. The problem is:
There is an elevator with a mass of 1200kg accelrating upward at 2.1m/s^2. Find T.
For that what I did was 1200 \times 9.8m/s^2 which gave me 11,760. I then plugged this into F=ma and got 14,280.
The second part of the equation...
Ok so what I get out of that is that I'm trying to find T which is the tension on the elevator pointing up? And the force down is the gravitational force which is 9.8 m/s. The elevator is accelerating up at 2.1m/s^2. So now I need to find an equation to figure out T.
I don't know where I got that equation from. I'm still a little confused about the tension problem. I guess I don't really know how to go about solving it.
I have 2 questions:
1) A freight train has a mass of 1.1\times 10^7 kg. If the locomotive can exert a constant pull of 7.8\times 10^5 N, how long does it take to increase the speed of the train from rest to 90 km/h?
I figured I could just use the formula F=ma to get the acceleration then I...
Sorry about not including information with the problems. I've tried way too many things to write them down. I understand the concept of using and re-using and contorting the equations as to get the answer that I need, I guess I really don't know where I go wrong.
1) With the first problem I...