How is Gravitational Potential Energy Lost by a Gliding Cessna-182?

AI Thread Summary
The discussion focuses on calculating the rate at which a fully loaded Cessna-182 loses gravitational potential energy during a glide. Given the plane's mass of 1250 kg, altitude of 2540 m, and a constant glide speed of 126 km/h, the gravitational potential energy loss can be determined using the formula for gravitational potential energy. The drag force of 1300 N also plays a role in the overall energy dynamics during the glide. The expected answer for the rate of energy loss is 47.3, but the method to arrive at this figure remains unclear to the participants. Understanding the physics behind gravitational potential energy loss is crucial for solving the problem.
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Homework Statement


A fully loaded Cessna-182 airplane of mass 1250 kg has an engine failure when flying with an airspeed of 126 km/h at an altitude of 2540 m on a calm day. It then glides at a constant glide angle (which is the direction of flight below the horizontal) towards a safe landing at this constant speed of 126 km/h experiencing a drag force of 1300 N that opposes the direction in which the plane is moving.
Please use: g = 9.81 m s-2


2. Homework Equations
Find the rate with which the loaded plane is losing gravitational potential energy.

the answer is 47.3 but i don't know how to get it
 
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