Recent content by eatingblaa

Yeah I was originally thinking about just battery powering them, it was just I am a first year civil eng student and we have a physics module this semester, and have spent the last month working on different coils, faradays and lenz laws. Tbh its stuff I am not really interested in and was...

Hey, bit of an odd projection question here, Im working on generating a current(enough to power a few leds) in a juggling club. I was originally thinking of a "shake" generator like this <a href="http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p020.shtml" >This</a> With...

normal force something like Fn = -mg/cosx okay that's my crappy diagram and might help you explain to me where I am going wrong

Okay, firstly when you say the sign of the centripetal force is off, I assume you mean it should be negative. (Centripetal force acts towards the centre of rotation, so I thought this would be positive ) Any chance you could explain this? Normal Force. I am not sure how to solve this. im...

This is my latest attempt, I put the x-axis in the direction of the slope and y-axis in the direction of the normal, I resolved the components on the x-axis as follows, Weight of Baggage = Static Force + Centripetal force mgsinx = mgsinx(0.740) + ((mv^2)/r)cosx using this I get a...

1. A simple pendulum is made from a 0.773-m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before it attains its greatest speed? 2. f = 1/2pi...

1. A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 21.5 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 111 m), the block swings toward the outside of the curve. Then the...

hmmmm so f = ma, but in cicular motion that is f = ? If I found the normal force I think I would be able to find the centripetal acceleration, but I am not able to. Any other tip would be greatly appreciated

1.Your suitcase is on a baggage carousel, Your suitcase has not slid all the way down the slope and is going around at a constant speed on a circle (r = 9.10 m) as the carousel turns. The coefficient of static friction between the suitcase and the carousel is 0.740, and the angle θ of the...

your right it was a calculation error, I had taken the friction coefficient as 0.0313 rather than 0.313 creating a 1 decimal place error. Got it right now tho. Thanks for your help and this has shown my lack of understanding, i just kinda know what to do, not why I am doing it if you...

I would explain that because of Newtons 3rd law of motion "to every action there is an equal and opposite reaction" The action of gravity creating the weight of the object must have an equal and opposite force, this is called the "normal force" Would this be an okay explanation?

I first found the normal force = mass x gravity = 268.794 N Then kinetic friction = normal force x kinetic coeffecient = 8.41 N is this right? I don't know what you mean by do i see what it needs to be, could you please explain, thank you

thanks for all the help, now i just need to figure out my other question posted down lower, and how to mark this as done

okay so upward forces on the man are the tension on the rope caused by the man pulling one side, these are 361 x 2 = 722 N downward forces is his weight caused by gravity = 659.232 N Net Force = 62.768 a = 0.934 ms-2 ? sorry for being so slow tonight

tension in the rope would be 361 N and would be on both sides? so cancel each other out? so the only forces on the man are his weight and pulling himself up? sorry if I am missing something completely, I feel like there is still something to click with me in this question