Mechanical Prop...

A force of 10³ newton stretches the length of a hanging wire by 1 millimetre. The force required to stretch a wire of same material and length but having four times the diameter by 1 millimetre is

Stress to strain ratio is equivalent to

Young\'s modulus of perfectly rigid body material is

A wire of diameter 1 mm breaks under a tension of 1000 N. Another wire, of same material as that of the first one, but of diameter 2 mm breaks under a tension of

A fixed volume of iron is drawn into a wire of length L. The extension x produced in this wire by a constant force F is proportional to

On applying a stress of 20 × 10⁸ N/m² the length of a perfectly elastic wire is doubled. Its Young\'s modulus will be

To keep constant time, watches are fitted with balance wheel made of

In the Young\'s experiment, if length of wire and radius both are doubled, then the value of Y will become

A rod is fixed between two points at 20°C. The coefficient of linear expansion of material of rod is 1.1 × 10^–5/°C and Young\'s modulus is 1.2 × 10¹¹ N/m². Find the stress developed in the rod if temperature of rod becomes 10°C