A bob of 1 kg wt is suspended by a rubber cord 2m long and of cross section `0.5 cm^2` it is made to descrbie a horizontal circle of radius 50cm, 4 times a second. Find the extension of the cord, Young's modulus of rubber is `5xx10^8 N//m^2`

One end of a wire 2m long and 0.2 cm^2 in cross section is fixed in a ceilign and a load of 4.8 kg is attached to the free end. Find the extension of the wire. Young modulus of steel =2.0xx10^11Nm^-2 . Take g=10ms^-2 .

A body of mass 1 kg is fastened to one end of a steel wire of cross- section area 3 xx 10^(-6)m^(2) and is rotated in horizantal circle of radius 20 cm with a constant speed 2 m//s . Find the elongation of the wire (Y= 2 xx 10^(11) N//m^(2))

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 ?

A stone of mass 20 g is projected from a rubber catapult of length 0.1 m and area of cross section 10^(-6)m^(2) stretched by an amount 0.04 m. The velocity of the projected stone is __________ m/s. (Young's modulus of rubber =0.5 xx 10^(9) N//m^(2) )

A mass of 100 grams is attached to the end of a rubber string 49 cm. long and having an area of cross section 20 sq. mm. The string is whirled round, horizontally at a constant speed of 40 r.p.s in a circle of radius 51 cm. Find Young's modulus of rubber.

A steel wire of length 4m and diameter 5mm is stretched by 5 kg-wt. Find the increase in its length , if the Young's modulus of steel wire is 2*4 xx 10^(-12) dyn e//cm^(2)

A load of 10 kg is suspended by a metal wire 3 m long and having a cross sectional area 4mm^2 . Find a. the stress b. the strain and c. the elongation. Young modulus of the metal is 2.0xx10^11Nm^-2

A catapult consists of two parallel rubber cords each of length 20cm and cross-sectional area 5cm^(2) . When stretched by 8cm , it can throw a stone of mass 4gm to a vertical height 5m , the Young's modulus of elasticity of rubber is [g = 10m//sec^(2)]

A steel wire of length 4 m and diameter 5 mm is stretched by kg-wt. Find the increase in its length if the Young's modulus of steel wire is 2.4 xx 10^(12) dyn e cm^(-2)