8 g oxygen gas is expanded isothermally at $27^{c} i r c C$ from 2 $d m^{3}$ to 8 $d m^{3}$ at a constant external pressure of 4 atm. If the magnitude of work done in this process is used in lifting body of mass 40 kg, the height in (metre) upto which the body can be lifted is (g=10 $m s^{- 2}$ )

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Solution

$P_{e x t} (V_{2} - V_{1}) = m g h 4 (8 - 2) \times 101.3 = 40 \times 10 \times h h \approx 6 metre$

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8 g oxygen gas is expanded isothermally at 27circC from 2 dm3 to 8 dm3at a constant external pressure of 4 atm. If the magnitude of work done in this process is used in lifting body of mass 40 kg, the height in (metre) upto which the body can be lifted is (g=10 ms−2)

Pext(V2−V1)=mgh4(8−2)×101.3=40×10×hh≈ 6 metre

8 g oxygen gas is expanded isothermally at $27^{c} i r c C$ from 2 $d m^{3}$ to 8 $d m^{3}$ at a constant external pressure of 4 atm. If the magnitude of work done in this process is used in lifting body of mass 40 kg, the height in (metre) upto which the body can be lifted is (g=10 $m s^{- 2}$ )

$P_{e x t} (V_{2} - V_{1}) = m g h 4 (8 - 2) \times 101.3 = 40 \times 10 \times h h \approx 6 metre$