Recent content by russjai

Im having issues with my weak algebraic skills trying to correctly re-arrange the following equation for "d" 110=(24/(pi*d^2))+((3.5/(pi*d^4/64))*(d/2) i know that d=70 . I have no idea how to attack this transposition. Could someone please give me a few pointers or point me to a...

ok i still can't seem to get the correct answer. with this equation Sv=2π cos 2πt Im taking "2π cos " to be the outer function & 2πt to be the inner function so the derivative of "2π cos" would be just "-sin" And the derivative of "2πt" would be "2π" When i put it together i end up with...

So to get the derivative of Sv=2π cos 2πt to find acceleration . Would i just use the chain rule again? If so does this look correct ? Sa=2π^2 sin 2πt? thanks

Ok would i be correct in saying the derivative of S=sin2πt is Sv=2π cos 2πt ?

1. The equation of motion is given by s=sin2πt (m) . Find the acceleration after 4.5 seconds The Attempt at a Solution Im getting confused on whether the above equation is for velocity or distance. I know the derivative of distance is velocity and that the derivative of velocity is...

Thanks for your quick response tiny-tim, Ok i see where i went wrong with the algebra concerning Q.2 . I can now solve it to t(t-7)=18 , Where 't' obviously = 9 For the 1st part regarding evaluating the integrals, still not too sure how to go about it would you possibly be able to show...

Hi everyone, I have the answers for the following questions, I need the working out shown step by step. As i seem to get the incorrect answer. Not sure how to even start with the evaluation of integrals when in fraction form as below. Help very appreciated . Thanks 1. Evaluate the integrals...