A bulldozer pushes 1000 lbm of dirt 300 ft with a force of, Civil Engineering

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A bulldozer pushes 1000 lbm of dirt 300 ft with a force of

1. Airplane takeoff from an aircraft carrier is assisted by a steam-driven piston/cylinder with an average pressure of 200 psia. A 38 500-lbm airplane should be accelerated from zero to a speed of 100 ft/s, with 30% of the energy coming from the steam piston. Find the needed piston displacement volume.

2. A bulldozer pushes 1000 lbm of dirt 300 ft with a force of 400 lbf. It then lifts the dirt 10 ft up to put it in a dump truck. How much work did it do in each situation?

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Civil Engineering: A bulldozer pushes 1000 lbm of dirt 300 ft with a force of

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