A stone of mass 20g is projected from a rubber catapult of length 0.1m and area of cross section 1 0^−6m^2 stretched by an amount 0.04m. The velocity of the projected stone is ___m/s (Young's modulus…

Question

A stone of mass 20g is projected from a rubber catapult of length 0.1m and area of cross section 1 0^−6m^2 stretched by an amount 0.04m. The velocity of the projected stone is ___m/s (Young's modulus of rubber =0.5×1 0^9N/m^2)

Accepted Answer

Correct answer: 20. (20) By energy conservation 12 . YAL .x^2= 12mv^2 0.5 10^9 10^-6 (0.04 )^20.1= 201000v^2 ∴v^2=400 v=20m/s

$A stone of mass 20g is projected from a rubber catapult of length 0.1m and area of cross section 1 0^{- 6} m^{2} stretched by an amount 0.04m. The velocity of the projected stone is ___m/s (Young's modulus of rubber = 0.5 \times 1 0^{9} N / m^{2})$

Solution

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