1. ## physics question

i solved the part b and got answer as 3.31*10^18
cant figure out part c and d can anyone verify my answer and provide me with the solution for part c and d

2. ## Re: physics question

A body moving in a circle, with radius R, with angular velocity $\displaystyle \omega$ can be represented by the parametric equations $\displaystyle x= R cos(\omega t)$, $\displaystyle y= R sin(\omega t)$. Differentiating, the velocity vector is given by $\displaystyle v_x= -\omega R sin(\omega t)$, $\displaystyle v_y= \omega R cos(\omega t)$. Differentiating again, the accelertation is given by $\displaystyle a_x= -\omega^2R R cos(\omega)$, $\displaystyle v_y= -\omega^2 R sin(\omega t)$. And, of course, ma= F which you have from part a.

3. ## Re: physics question

A body orbiting another body in a circle has an acceleration towards the centre of its orbit given by $\displaystyle a_n=\omega^2R$ This acceleration towards the centre is proportional to the force pulling it to the centre.

4. ## Re: physics question

guys did i get my answer for B right i.e 3.31*10^18 can u tell me that .

5. ## Re: physics question

Originally Posted by abdulrehmanshah
guys did i get my answer for B right i.e 3.31*10^18 can u tell me that .
Yes - that's correct. Be sure to note that your answer is in newtons.