Question

A closed cylinder of 0.25 m diameter is fitted with a light frictionless piston The piston is retained in position by a catch in the cylinder wall and the volume on one side of the piston force of 120 N on the Example 2.5 contains air at pressure of 750 kN/m2. The volume on the other side of piston is ev spring is mounted coaxially with the cylinder in this evacuated space to give a piston in this position. The catch is released and acuated. A the piston travels along the cylinder until it comes to after a stroke of 1.2 m. The piston is then held in its position of maximum travel by a ratchet echanisms. The spring force increases linearly with piston displacement to a final value of 5 kW rest Çalculate the work done by the compressed air on the pistorn.

Answer 1

So at 1.2m then 5oo0 uL be ウ120 + K× 1.2 4880:1-2K· K-4066 . 66 ウK-406 7. 3o Fy 1204067x(e.ib Therefore12 レ 2 Įtna. 4067x3 dz 6 2. 2oz 40672 2 う 120X1-2 t 4067x L2 - 2 144 t 2928.24 ラ307224 Joule亼CAny ラ 3.07224 KJ 0-6)