Recent content by CoolGod

Which particle experiences the largest centripetal force in a centrifuge? (3.3) K/U T/I (a) a 0.05 g particle at a distance of 2 cm from the centre (b) a 0.05 g particle at a distance of 5 cm from the centre (c) a 0.1 g particle at a distance of 2 cm from the centre (d) a 0.1 g particle...

i solved for the answer and he is going up. Since he pulls 2 m for every m he goes up, and work is same then it is similar to mechanical advantage of 2. Thus ((2*250)-480)/(480/9.81)=0.40875 m/s^2. so chair is accelerating at 0.40875m/s^2 and the force acting on it is fg 160n down fpc...

Hmm 256bits i don't understand where you are confused. fundamentally is he going up or down?

A person is sitting on a swing/seat/platform and pulling himself up with a rope. Don't worry about the swing part. One end of the rope is attached to 2 other metal wires connected to the seat. The other end of the rope is attached to a spring scale and is being pulled by the person. The rope...

Our physics teacher gave us a formula to calculate intensity, she didn't really specify what intensity, it should be related to sound. I = intensty A = amplitude P = Density F = frequency V = velocity pi = 3.14 she said I = 2*(pi)^2*A^2*P*F^2*V I can't find anything like this in books or...

lol. Thank you for your explanations. Safety is still very important to us. Would coil guns be much safer to build? Although less interested in coil guns, it's still a linear motor of sort. Also just for fun, are supercapacitors used in railguns?>

thank you for your comment oldEngr63. I was still wondering about scaling issues. Building rail guns with 10^6 amps is a bit overkill for this simple project. My idea is kind of hobby/fascination based. I know these railguns can be scaled up into much more powerful weapons but what about scaling...

I'm currently working on a project for projectile motion and my teacher wants to see us launch a round ball about marble(maybe smaller) sized into a ring clamp on a retort stand somewhere around the room. She suggest we all use "gravity" (a simple ramp that let's a ball slide down and shoot up)...