Test SeriesFree PYQsExamsPricing

JEE Main 2019 Physics question

PhysicsMechanical Properties of SolidsJEE Main 2019

A boy's catapult is made of rubber cord which is 42 cm long, with 6 mm diameter of cross-section and of negligible mass. The boy keeps a stone weighing 0.02 kg on it and stretches the cord by 20 cm by applying a constant force. When released, the stone flies off with a velocity of 20 ms. Neglect the change in the area of cross-section of the cord while stretched. The Young's modulus of rubber is closest to:

Answer: (C)

Solution

$Missing argument for \tfrac\tfrac12 Y( = Missing argument for \tfrac\tfrac ⇒ Y = Missing argument for \dfrac\dfrac{mv^2l}{A(Δ

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-009232