2 years ago

Why might the filament lamp inside a lamp melt when a lamp is first switched on?

1 answer:

8 0

They would melt because the heating of platinum that showed air was absorbed into its pores as it was heating, thus weakening the metal and causing it to melt at low temperatures

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$N-mg=\dfrac{mv^2}{r}\\\Rightarrow N=\dfrac{mv^2}{r}+mg\\\Rightarrow N=\dfrac{2000\times 18^2}{24}+2000\times 9.81\\\Rightarrow N=46620\ \text{N}$

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