A body of mass 1 kg is attached to one end of a wire and rotated in a horizontal circle of diameter 40 cm with a constant speed of 2m/s. What is the area of cross-section of the wire if the stress developed in the wire is `5 xx 10^(6) N//m^(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 mass of 20kg is attached to one end of a steel wire 50cm long and is rotated in a horizontal circle. The area of cross-section of the wrie is 10^(-6) m^(2) and the breaking stress for it is 4.8 xx 10^(7) Pa. Calculate the maximum velocity with which the mass can be rotated.

A copper wire of negligible mass, 1 m length and cross-sectional area 10^(-6) m^(2) is kept on a smooth horizontal table with one end fixed. A ball of mass 1 kg is attached to the other end. The wire and the ball are rotating with an angular velocity of 20 rad//s . If the elongation in the wire is 10^(-3) m . a. Find the Young's modulus of the wire (in terms of xx 10^(11) N//m^(2) ). b. If for the same wire as stated above, the angular velocity is increased to 100 rad//s and the wire breaks down, find the breaking stress (in terms of xx 10^(10) N//m^(2) ).

A copper wire of negligible mass, 1 m length and cross-sectional area 10^(6) m^(2) is kept on a smooth horizontal table with one end fixed. A ball of mass 1 kg is attached to the other end. The wire and the ball are rotating with an angular velocity of 20 rad//s . If the elongation in the wire is 10^(-3) m . a. Find the Young's modulus of the wire (in terms of xx 10^(11) N//m^(2) ). b. If for the same wire as stated above, the angular velocity is increased to 100 rad//s and the wire breaks down, find the breaking stress (in terms of xx 10^(10) N//m^(2) ).

A block of mass 1 kg is fastended to one end of a wire of cross-sectional area 2 mm^(2) and is rotated in a vertical circle of radius 20 cm. The speed of the block at the bottom of the circle is 3.5 ms^(-1) . Find the elongation of the wire when the block is at the top of the circle.

A metal wire of negligible mass, length 1 m and cross-sectional area 10^(-6) m^(2) is kept on a smooth horizontal table with one end fixed on the table. A ball of mass 2kg is attached to the other end of the wire. When the wire and the ball are rotated with angular velocity of 20 rad/s, it is found that the wire is elongated by 10^(-3)m . If the Young's modulus of the metal is n xx 10^(11) N//m^(2) , then the value of n is