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A girl of mass 40 kg climbs up stairs by...

A girl of mass 40 kg climbs up stairs by spending 800 J of energy. How high does the girl climb up ? [Take g=10 `ms^(-2)`]

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To solve the problem of how high the girl climbs, we can use the concept of gravitational potential energy. Here’s a step-by-step solution: ### Step-by-Step Solution: 1. **Identify the Given Information:** - Mass of the girl (m) = 40 kg - Energy spent (which is converted to potential energy, PE) = 800 J - Gravitational acceleration (g) = 10 m/s² ...
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