Recent content by Physkat

Haruspex, thank you. I'll have to do some digging, but it gives the answer as 24.6 degrees. So I'll try to get to the bottom of it. Thanks again!

Haruspex, Thank you for your response. Here is the image associated with the problem.

Homework Statement A 0.020-kg mass is attached to a 1.2-m string and moves in a horizontal circle with a constant speed. The tension in the string is measured at 0.200 N. What is the measure of angle θ? Homework Equations ∑F=ma, a=v^2/r The Attempt at a Solution I broke down the forces at...

Hi again, I understand the idea of blending the two equations to only get one unknown variable. I think what I initally did doesn't work, which is to set up the equation v=delta distance/delta time, then switching this to t=delta distance/delta v (which is 0-20). I plugged in t=.2 m/-20m/s, but...

Haven't gotten to the chapter on work and energy yet. But just rearranged the equation to get t=.01, which led me to the mass of the ball at .25 kg, hooray! Thank you for not being snarky in regards to me slowly grasping these physics concepts. I appreciate your help!

Thanks Nathanael, but I'm still left a little confused. So you're saying that final velocity is 0 (coming to a stop - that makes sense), which gives me that a=(v-v0)/t = -20/t. If I plug this into ΣF=ma, which would be 500=m(-20/t), I'm still left with 2 unknown variables, nor have I used the...

Initial velocity (v0) is 20 m/s, right? So I'm trying to find final velocity (v), when the ball is in her hands slowing down and coming to a stop.

Here is the problem, and I'm banging my head against a wall trying to set it up: An athlete catches a ball traveling at 20 m/s with her hands. Between the time she makes contact with the ball and the time the ball stops moving, the ball travels a distance of 20 cm. The goaltender feels a force...

Oh boy - I feel silly. Zero, of course. Thank you Haruspex. I was so focused on the set up of the problem I looked past that. Then the sin90*FN would simply be FN, as I originally thought. And I also tried to do the screen shot problem in a slightly different way (I tried the ramp sloping...

Thank you! Yes, this course is a college level algebra-based physics course. I have my bachelors and masters, but as I mentioned I am changing career paths and have delved into college science coursework again.

As I try to set up equations regarding Newtonian forces, I am looking for patterns in example problems I read. It's really frustrating then when I see different approaches that I can't see a connection to. There are two problems that I've attached that seem to solve - what seems to me about...

Hi there, I'm giving this website a try because at this point I'm quite desperate for some help with my beginning physics course. I've plunged back into a second career path in the hopes of applying to PA school next summer, and thus far I've done well in my science courses. This physics...