Recent content by uknew

oh ok thanks

also how does cutting the spring change the stiffness or av. forfce exerted. ?will it go higher or the same?any help is good

can anyone help me in figuring out why i got different answers in my calculated value to my experiment value (or maybe its normal) when i calculated the aproximate distance a projectile would shoot up when i compressed a spring thru a distance. i calculated the spring constant and found the...

i think maybe you are ,mistaking the action reaction forces. they sre equal in magnitude opposite in direction and act on different masses so different inertias and they have different resistance to motion so while you may move,. the same force acts on a different inertia and depending on its...

interesting thanks

thanks tiny tim. so say for example that a wheel is moving at speed of sound or some high number ( just pretend) and me being unbreakble and at rest grab onto the outer rim of the wheel, my body will accelerate to the speed of the wheel in a time t..if the wheel is moving at constant velocity...

interesting,..but yea d stands for displacement which is different from distance..and the instantaneous time would be a derivative. if time wasnt constant i got a question about velocity but i don't know if itll be alright to put it here so ill put it anyways ok first imagine you are in a...

hmm this is interesting..in my reasoning ignoring air resistance the shell is also in free fall before its shot. then when shot the bullet causes a reaction and pushes the tank back. the reachtion is equal to the action of shooting the bullet..if you know the initial velocity of the bullet when...

thanks, and yea i think the set up you ahad was right, one side is tied and the other end islput over a nail or massless pulley and pulled and the pulled string does get shorteras the mass rises.. so there is no difference between pulling bothsides horizontally with the same force and pulling...

thanks sophiecentaur. so my question is this does a motor(ac or dc i guess its ac for an electric saw that plugs to the wall) still reach its given max rpm even if the fly wheel changes MI? only the time to reach it will increase if the MI inc. with a given torque? " Eventually, a motor will...

oh sory about that...ok picture a wall,, i get one side of the string and nail it to the wall..then i tie a weight to the middle of the string...now i have nail with string on wall, weight in middle of string and loose end in my hand so as it forms a "v" the part in my hand is pulled...

i don't know if this the right place for this question by ill put it anyways in an electric motor (ac) with given volts, amps and max rpm (im guessing its max rpm that the specs give in a electric motor) how does the quantity of max rpm change? will it go up or down or neither if you increase...

yea but in my set up it don't swing it acts more like a simple machine and moves the mass diagonally up ..the applied force on one side is constant and horizontal but the side that's tied is the one that will change(i think) as i pull on one side since the mass hanging from the middle will try...

any help is good so i was thinking about a string and a mass hanging from the center (not tied) of it(any mass "m" and string of negligible mass). so imagine a mass hanging from the center of a string making a "v". and i thought what if i tied one side and pulled horizontally on one side only...