I found a solution for a problem I've been struggling with recently for a scissor lift table horizontal and vertical velocities. This research paper shows that both are dependantdependent on l$l$, S$S$ and h$h$. But the problem is l is a constant since it's the length of a steel bar that is supposed not to change, however the writer derived it first and applied derivative rule as if l was a variable. Does this mean this solution is wrong?
Here it is :
I found a solution for a problem I've been struggling with recently for a scissor lift table horizontal and vertical velocities. This research paper shows that both are dependant on l, S and h. But the problem is l is a constant since it's the length of a steel bar that is supposed not to change, however the writer derived it first and applied derivative rule as if l was a variable. Does this mean this solution is wrong?
Here it is :
I found a solution for a problem I've been struggling with recently for a scissor lift table horizontal and vertical velocities. This research paper shows that both are dependent on $l$, $S$ and $h$. But the problem is l is a constant since it's the length of a steel bar that is supposed not to change, however the writer derived it first and applied derivative rule as if l was a variable. Does this mean this solution is wrong?
Here it is:
I found a solution for a problem I've been struggling with recently for a scissor lift table horizontal and vertical velocities. This research paper shows that both are dependant on l, S and h. But the problem is l is a constant since it's the length of a steel bar that is supposed not to change, however the writer derived it first and applied derivative rule as if l was a variable. Does this mean this solution is wrong?
Here it is :
