1.
What are Stress and Strain?
2.
State Hooke’s law.
3.
What is Yield point?
4.
A load of 2 kg produces an extension of 1 mm in
a wire of 3 metres in length and 1 mm in diameter. Calculate the Young’s modulus of the wire.
5.
A string used in a circus company is put to
severe stress. It is twisted in a certain swing by an angle ‘α’(where α=24o
). If ‘K’ is the rigidity modulus
of string, 'L' is the length and ‘x’ is its radius, find the couple involved in the twisting of string.(bring out derivation)
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