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`

A 2 kg mass is suspended by a rubber cord 2 m long and of cross-section 0.5 cm. It is made to describe a horizontal circle of radius 50cm in 4 times a second. Find the extension of the cord.(Young's modulus Y=7xx10^(8) Nm^(-2) )

One end of a wire 2m long and 0.2 cm^2 in cross section is fixed in a ceiling 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 .

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 .

One end of a wire 2m long and 0.2 cm^2 in cross section is fixed in a ceiling 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 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.