GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An engine that weighs 350 pounds is removed from an nircraft by means of a mobile hoist. The engine is raised 3 feet above its attachment mount, and the entire assembly is then moved forward 12 feet. Constant force of 70 pounds is required to move the londed hoist. What is the total work input required to move the hoist?
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840 foot pounds
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1, 890 foot pounds
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1, 050 foot pounds
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None of the above
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Explanation:
Detailed explanation-1: -If 120 pounds of force is needed to hold back a weight as it is lowered for 3 feet, 360 foot-pounds of work has been done.
Detailed explanation-2: -We must exert a force of 40 pounds to roll a 120-pound barrel up the 9-foot inclined plane to lift it 3 feet.
Detailed explanation-3: -Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest? High temperature with high humidity.
Detailed explanation-4: -rate of flow will be greatest where the pressure is greatest (between metered and unmetered) C. where unmetered is 17 PSI and metered is 5 PSI. Volume and pressure are inversely proportional.
There is 1 question to complete.