Posted by **Edwin** on Sunday, March 28, 2010 at 3:03pm.

A light rigid bar is suspended horizontally from two vertical wires, one of steel and one of brass. Each wire is 2.00m long. The diameter of the steel wire is 0.60mm and the length of the bar AB is 0.20m. When a mass of 10.0kg is suspended from the centre of AB the bar remains horizontal. (i)what is the tension in each wire? (ii)calculate the extension of the steel wire and the energy stored in it. (iii)calculate the diameter of the brass wire. (iv)if the brass wire were replaced by another brass wire of diameter 1.00mm, where should the mass be suspended so that AB would remain horizontal? The young modulus for steel= 2.0 x 10^11 Pa, the young modulus for brass=1.0 x 10^11 Pa.

## Answer This Question

## Related Questions

- physics - A light rigid bar is suspended horizontally from two vertical wires, ...
- Physics - A copper wire of diameter 0.30mm and length 1.50m is joined to ...
- Physics - A 2.2m of steel wire hangs vertically down from a support. A 1.5m ...
- physics - A 15-kg chandelier is suspended from the ceiling by four vertical ...
- College Physics II - A steel wire and a copper wire, each of diameter 2.000 mm, ...
- mechanics - The change in length of a steel wire under an applied load can be ...
- mechanics of materials - The change in length of a steel wire under an applied ...
- mechanics of materials - Select the correct answer.The change in length of a ...
- physics - Find the diameter of an 18 m(L) long steel wire that will stretch no ...
- Physics || - Q.1. Two wires each of length 40 m and diameter 2.6 mm, are ...

More Related Questions