A test equipment for measuring the maximum shock load in a car incorporates a piezo$-$ electric force link, a charge amplifier and a recorder. For a certain test carried out at $85$km$/$h$,$ a maximum deflection of $100$mm was obtained on the recorder. Determine the maximum value of the shock load if the equipment has the following sensitivities$.$ Force link $=4$Pc$/$N$,$ charge amplifier $=10$mV$/$Pc and recorder$=1$ mm$/$V