A Gas powered cannon shoots a projectile by introducing nitrogen gas at 20.5MPa into a cylinder have a inside diameter od 50mm ..compute the force exerted on the projectile

40251.7 N

Explanation:

Given stress of 20.5 MPa and diameter of 50 mm

First, convert all the units into common units hence stress will be while diameter will be 0.05 m

Stress is given by dividing force by area and force is unknown hence Force is the product of area and stress.

The area will be given by

and substituting d for 0.05 m then the area will be

Therefore, force will be  

the right answer is 0.3 meters per second