Recent content by sweetdaisy186

OH! I see waht you mean, thanks!

I'm confused. I thought the tension would be the same for both of them. I used T-W2 = M2 * a and then solved for T. Then I set the tensions for both boxes equal to each other. I don't understand what you are saying about the acceleration though. Is that supposed to be part of my free body diaghram?

Hey guys! I can't seem the get the right answer for the problem below. I'm really close, but I have no idea what I'm doing wrong. I've attached the question and my work. Any suggestions would be greatly appreciated. Thanks!

omg, I can't believe I didn't catch that. Thanks! Wouldn't it be kinetic friction if he didn't lock his breaks?

Hey! I got my masses to cancel out, but I didn't get the right answer. I can't figure out what I did wrong. Here's my work it. :smile:

Hey guys! I think I have half of the question figured out The question: Skid is driving his car at 80 mi/hr. While reading the Springfield Reivedw of Books, he looks up and notices he is about to crash into a wall. When he is 100 m from the wall, he puts on the brakes. If Skid does not...

whoops! Sorry, my mistake!

Calculate Friction Hey guys! I think I have half of the question figured out The question: Skid is driving his car at 80 mi/hr. While reading the Springfield Reivedw of Books, he looks up and notices he is about to crash into a wall. When he is 100 m from the wall, he puts on the brakes...

I see. that makes a lot of sense. Thanks!

ah! Whoops! I forgot about that! Thanks!

Hey guys! Here's another question A mass, m1=5 kg, is on a frictionless ramp. The mass is connected to a cable that passes over a pulley which is then attached to a second hanging mass, m2 = 10kg. How long will it take the boxes to move 3 m if they are released from rest? My problem with...

oh whoops, sry I didn't find my question. I thought I could use the T=m*a formula, but that didn't get me the right answer. How do I know which formula to use? Thanks!

Hey guys! I feel like this should be an easy problem... Two blocks are fastened to the ceiling of an elevator. Each block has a mass of 10 kg. The elevator accelerates upward at 2 m/s^2. Find the tension in each rope. My prof drew a picture

*sigh* I think I am doing something wrong because I'm not getting the right answer. Since it's on the negative x-axis, it's going to be negative 60sine/cos 0 right? My prof told me in class today that the x component is not always cos and the y component is sine. He did an example on the board...

I understand the pythag and the inverse tangent part. He didn't give us the angles for the vector that is lying on the negative x-axis. That's where I'm confused. What would that angle be? He said that when we formed the right triangle, the hypothenuse would be 60. I think that is what the...