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A catapult consists of two parallel rubb...

A catapult consists of two parallel rubber strings, each of lengths 10cm and cross sectional area `10mm^2`.When stretched by 5cm, if can throw a stone of mass 100g to a vertical height of 25m. Determine Young’s modulus of elasticity of rubber.

A

`9.8 xx 10^7N/m^2`

B

`8.9 xx 10^7N/m^2`

C

`25 xx 10^1N/m^2`

D

`2.5 xx 10^-1N/m^2`

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