A boy's catapult is made of rubber cord which is `42cm` long, with `6mm` diameter of cross-section and of negligible mass. The boy keeps a stone weighing `0.02kg` on it and stretches the cond by `20cm` by applying a constant force. When released. The stone flies off with a velocity of `20ms^(-1)`. Neglect the change in the area of cross-section of the cord while stretched. The Young's modulus of rubber is closet to:
The length of a rubber cord doubles, when stretched. Its Young's modulus is equal to
A boy has a catapult made of a rubber cord of length 42 cm and diameter 6.0 mm . The boy stretches the cord by 20 cm to catapult a stone of mass 20 g . The stone flies off with a speed of 20 ms^(-1) . Find Young's modulus for rubber. Ignore the change in the cross section of the cord in streching.
A force of one newton doubles the length of a cord having cross-sectional area 1mrh^(2) . The Young's modulus of the material of the cord is
A rubber cord of cross-sectional area 2 cm^(2) has a length of 1 m. When a tensile force of 10 N is applied, the length of the cord increases by 1 cm. What is the Young's modulus of rubber ?
COMPLETION TYPE QUESTIONS A tensile force of 2 xx 10^5 dyne doubles the length of an elastic cord whose area of cross-section is 2 cm^2 . The Young's modulus of the material of the cord is _______.
An area of cross-section of rubber string is 2 cm^(2) . It length is doubled when stretched with a linear force of 2 xx 10^(5) dynes. The Young's modulus of the rubber in "dyne/cm"^(2) will be
A wire of length L and area of cross section A is made of a material of Young's modulus Y. If it is stretched by an amount x, the work done is given by
When a rubber cord is stretched, the change in volume with respect to change in its linear dimensions is negligible. The Poisson's ratio for rubber is
An iron rod of length 2 m and cross-sectional area of 50 mm^(2) is stretched by 0.5 mm, when a mass of 250 Kg is hung from its lower end. Young's modulus of iron rod is
