Recent content by sodium40mg

How much error would I get if I used 9.8 m/s^2 as the acceleration for a falling object in an experiment? For example, if I have a ball at, say, shoulder's length up in the air and I had someone measure the time it took for the ball to hit the ground. Would I get a lot of error if I used the...

That's basically what we did for the first method though?

Yeah, that seems a little far fetched for our current understanding. Do you think there's any other way to measure the distance the spring changes with mass other than measuring it with a ruler? Something with acceleration, velocity? I'll do some research but I'm just hoping someone can key me...

Hmm...frequency of vibration is basically 1/T, or the time? Sorry, I actually don't know.

Homework Statement Basically I have to find two methods to show Hooke's Law by finding the spring constant of a spring. This is one method we did: We basically measured the length of the spring. This is your initial spring length. Then make one end of the the spring stationary and connect the...

1) Force of gravity. In the horizontal direction? I would think no horizontal forces? I don't know how force relates to change in velocity? 2) Does this have to do with Force = Pressure / Area? I think your weight divided into 2 and exerts on both your feet, one one foot it's weight divided...

Homework Statement Sorry to bother, but I was working through some homework I haven't done (I put a * next to ones I didn't get and I just wanted to post them because I have no idea how to do them): 1. If you are on a bus that is traveling along a straight, level road at 100 km/h, you are...

I see, and yeah I want my acceleration to be positive. So with that said, would these be the correct equations? Green mass: (13)(a) = T1 - (13)(9.8)(sinθ1) - (0.20)(13)(9.8)(cosθ1) Red mass: (18)(a) = T2 - T1 Blue mass: (23)(a) = T2 - (23)(9.8)(sinθ2) - (0.20)(23)(9.8)(cosθ2)...

Could you explain why the T1 is positive instead of being -T1?

Homework Statement Three blocks are connected by two different strings over two pulleys. Assume no friction between the pulleys and the rope segments. Green mass = 13 kg Red mass = 18 kg Blue mass = 23 kg The coefficient of friction between the masses and the surface is 0.20. Find the...