Recent content by Kumar9

Hi, I'm a first year university student interested in medicine as a career. My marks are relatively good (it's early, but GPA~3.9), but my weak subject happens to be physics and I am considering dropping it to retake it either over the summer or next term. It will be without penalty on the...

This is what I have so far: W=(mgUk)(d)cos180 Where Uk is the coefficient. Plugging in the appropriate values, I get a value of ~-215 J, the E lost due to friction. It seems right, but clearly I'm missing something.

I need to have this figured out soon; if someone could help I would greatly appreciate it.

The question is: A 15.7 kg block is dragged over a horizontal surface by a 68.7N force acting 17 degrees to the horizontal. The block is displaced 4.65m, and the kinetic friction coefficient is 0.3. What is the energy lost to friction? My thinking is that it would be equal to the negative...

Yes, that's what I needed to be confirmed. Thank you.

Hi all, I'm in my first year of university physics (mechanics and waves) and am stuck on an assignment question. The question itself is not complicated, but I feel as though I'm skipping over something important. The question is: A 3.8 kg block is pressed against a vertical wall by a force...