InterviewSolution
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InterviewSolution
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In the cylinder shown in the figure, air is enclosed under the piston. Piston mass M=60 kg, crosssectional area of the cylinder `S_(0)=20cm^(2)` atmospheric pressure `P_(0)=10^(5) pa alpha=37^(@)`. The air temperature is constant, the friction is negligible. What is the pressure of the enclosed gas?A. `3.4 xx 10^5 Pa`B. `4 xx 10^5 Pa`C. `4.75 xx 10^5 Pa`D. `2.8 xx 10^5 Pa` |
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Answer» Correct Answer - B `P_0 xx S_0 + mg = P xx S_0 sec 37^(@ )xx cos 37^(@)` `rArr P = P_0 + (msg)/(S_0)` `rArr 10^5 + (600)/(20 xx 10 ^-4)` `=4 xx 10^5 Pa` |
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