# Search results

1. ### Efficiency vs Height

Sure, here it is in a Word Document. Thanks for any help. EDIT: I have a feeling that the graph may not be linear. It's hard to find a solid linear relationship in physics (from my experience). Thanks anyway! Oh yeah, the line in the pictured was generated by Microsoft word. It may not be...
2. ### Efficiency vs Height

Our desired energy output is only Ek. Our desired energy input is only Eg. We are trying to find the efficiency vs height relationship. In our experiment, as we increased the vertical height, but remain a fixed distance, our cart traveled down the slope faster. This makes sense...
3. ### Efficiency vs Height

1. Homework Statement Hey guys! I am doing a very simple lab, and in need of your expertise! Haha, I am an intro-physics student, please don't get too complicated with me, my knowledge is very limited. The QUESTION is: WHAT IS THE RELATIONSHIP BETWEEN EFFICIENCY VS HEIGHT...
4. ### Relative vectors - how do you determine?

1. The problem statement I find it sometimes difficult to come up with the equation relevant to the question. If any one has any tips, your help is appreciated. 2. Relevant example For example: A passenger climbs aboard a northbound bus and walks toward the back at a rate of 1.8m/s...
5. ### [Vectors] airplane

1. Homework Statement ****If any one could help me, it would be much appreciated. I have attempted several times, but my answers aren't correct. I want to see what everyone else got. If possible, a diagram would be great. Thank you very much everyone. a pilot wants to fly her plane to a...
6. ### Newton's third law is absurd: argue why this isn't true.

thank you everyone!
7. ### Newton's third law is absurd: argue why this isn't true.

So isn't it when equal opposing force? If you push me, is there an equal opposing force? I think your force is greater, so therefore, I move forward. But the law says the object does not accelerate, with opposing and equal forces. Thanks to all for your help. If any one else can...
8. ### Newton's third law is absurd: argue why this isn't true.

1. Homework Statement If the forces in Newton's third law are equal and opposite, they cancel, and thus nothing can ever accelerate, so the law is absurd. 2. Homework Equations Argue why this isn't true. This is from my textbook, a very strong argument. 3. The Attempt at a...
9. ### Normal Force and Force of Gravity: When and why are they equal?

Oh right. so this means mg and normal forces cancel each other, because if one force was greater, then there is a vertical displacement as well. (Eg the brick on the table could vertically move up or down) I see I see. Thank you to everyone as well. Thank you!
10. ### Normal Force and Force of Gravity: When and why are they equal?

1. Homework Statement My teacher explained to my class that Normal force equals Force of Gravity. Given a free body diagram on a flat surface, Normal force is directed up, and Force of Gravity is directed down. 2. Homework Equations So my teacher did the following: Fg = Force of...