The average gas pressure in the cylinder is 1.2 MPa. The piston area is 300 cm ^ 2, the stroke length is 0.5 m

The average gas pressure in the cylinder is 1.2 MPa. The piston area is 300 cm ^ 2, the stroke length is 0.5 m. Determine the work of the gas in one piston stroke.

To determine the work of the gas under consideration in one piston stroke, we will use the formula: A = F * S = P * Sп * S.

Values of variables: P – average pressure of the considered gas in the cylinder (P = 1.2 MPa = 1.2 * 10 ^ 6 Pa); Sп – area of the piston (Sп = 300 cm2 = 300 * 10 ^ -4 m2); S – stroke length (S = 0.5 m).

Let’s perform the calculation: A = P * Sp * S = 1.2 * 10 ^ 6 * 300 * 10 ^ -4 * 0.5 = 18 * 10 ^ 3 J = 18 kJ.

Answer: In one stroke of the piston, the gas in question performs work of 18 kJ.