So, the equation is known there and then just follows the same procedure. I will get the value as this Q 1, which I am referring to, will be something like 80 times cos theta, that is going to be in we have adopted Newton per Newton that will be Newton per meter. And note that in the equation, you have a negative sin for the inertia force that is because of the acceleration. So, that will continue to arrive, continue to remain there, that negative signs. So, how does the inertia force vary, looking at this it will be a cosine curve, this is a cosine curve but note that, there is a negative sign. And hence the variation of inertia force will look as shown in that picture, for z equal to minus 0.2 d. And where will be the maximum force occurring, at cos equal to 180. So, you will have 80 point something 0.2 Newton per meter that will be the maximum force. Is that clear? Any of you have any doubts?