$\rightarrow S_1 = 1095.3\ N$

$\rightarrow S_2 = 1557.6\ N$

$\rightarrow$ $S = \frac{S_2 – S_1}{h} = 232\ N/mm$

$\rightarrow$ $sensitiveness = \frac{N_2 – N_1}{N_{mean}} = \frac{ Range \ of \ speed}{Mean \ speed}$

$= \frac{312\ – \ 285.09}{300}$

$= 0.089 = 8.9$%

For isochronous:

$\rightarrow$ $Fc_1 = mr_1 w^2 …