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`        A 80-kg man jumps out a window into a fire net 10 m below. The net stretches 2.0 m before bringing him to rest and tossing him back into the air. What is the potential energy of the stretched net if nonconservative forces dissipate no energy?`
2 years ago

Arun
23751 Points
```							Dear student Mass of man = 80 kgHence total weight. = m *g = 80 *9.8 = 784 N The man's energy of falling is arrested when he has fallen 10 meters to the net plus another 2 meters of stretching the net.  His weight is 784 N, so the total energy is: 784 N * (10 m + 2 m) = 9408 N-m = 9408 J If the net is fully elastic, the potential energy of the net is equal to the gravitational energy absorbed.
```
2 years ago
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• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions