• # question_answer If a hydraulic press has a ram of 12.5 cm diameter and plunger of 1.25 cm diameter, what force would be required on the plunger to raise a mass of 1 tonne on the ram? A) 981 N               B) 98.1 NC) 9.81 N              D) 0.98 N

$\frac{F}{\left( \frac{\pi }{4}\times {{(1.25)}^{2}} \right)}=\frac{1000\times 9.81}{\frac{\pi }{4}\times {{(12.5)}^{2}}}$ $F={{\left( \frac{1.25}{1.25} \right)}^{2}}\times 1000\times 9.81=98.1\,N$