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5. A jet airplane is travelling at 180 m/s. The engine takes in 68 m3 of air having mass 70 kg each second. The air is used to burn 2.9 kg of fuel each second. The energy is used to compress the products of combustion and to eject them at the rear of the plane at 490 m/s relative to the plane. Find (a) Thrust of the jet engine (b) Its Power in Watts. [Ans: (a) 36243 N in forward direction (b) 6523740 Watts Watt]

5. A jet airplane is travelling at 180 m/s. The engine takes in 68 m3 of air having mass 70 kg each second.
The air is used to burn 2.9 kg of fuel each second. The energy is used to compress the products of
combustion and to eject them at the rear of the plane at 490 m/s relative to the plane. Find (a) Thrust
of the jet engine (b) Its Power in Watts. [Ans: (a) 36243 N in forward direction (b) 6523740 Watts Watt]

Grade:12th pass

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