Question

a metallic sphere 792/25 g weight. If 1cm³ of metal weighs 35g wt, calculate the radius of sphere?​

Answer 1

Answer

Neglecting the upthrust in air,

Mass of metallic sphere = 40 gms

Density of Material=8g/cm

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So,

Volume of the metal used = 5cm

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-------(1)

When dipped in water,

Loss in weight = 20 g

So, Volume of water displaced/volume of sphere= 20cm

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-----------(2)

From (1) and (2),

Volume of cavity =(20−5)cm

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=15cm

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