Paraglider acceleration problem

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SUMMARY

The discussion centers on the forces acting on a paraglider, specifically addressing the lift force and its impact on vertical acceleration. The lift force is initially 1900 N, resulting in an upward force of 1900 N exerted on the Earth. When the lift force decreases to 1000 N, the resultant force acting on the paraglider becomes 900 N downward, leading to a vertical acceleration that can be calculated using Newton's second law, F=ma, where the mass must be determined for precise calculations.

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  • Understanding of Newton's laws of motion
  • Basic knowledge of forces and their vector components
  • Familiarity with the concept of lift in aerodynamics
  • Ability to calculate acceleration using F=ma
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  • Calculate the mass of the paraglider using the initial lift force of 1900 N
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  • Explore the relationship between lift, weight, and acceleration in flight dynamics
  • Investigate the effects of changing lift forces on glider performance
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A paraglider is flying horizontally at a constant speed. Assume that only two forces act on it in the vertical direction, its weight and a vertical lift force exerted on its wings by the air. The lift force has a magnitude of 1900 N. For both questions, take the upward direction to be the +y direction.
(a) What is the magnitude and direction of the force that the paraglider exerts on the earth?

This correct answer is 1900 N upwards. I need help with the next part.

(b) If the lift force should suddenly decrease to 1000 N, what would be the vertical acceleration of the glider?
m/s2
 
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If lift force decreases to 1000N, what will be the resultant force on the body now? What relationship does resultant force and acceleration have?
 
so would that mean the skydiver falls with a force of 900 N downward? How do I get his acceleration from that because i don't know his mass. Help?
 

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