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प्रश्न
Read the following statements below carefully and state, with reasons, if it is true or false.
The stretching of a coil is determined by its shear modulus.
उत्तर
True
Shear modulus is the ratio of the applied stress to the change in the shape of a body. The stretching of a coil changes its shape. Hence, the shear modulus of elasticity is involved in this process.
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संबंधित प्रश्न
The edge of an aluminium cube is 10 cm long. One face of the cube is firmly fixed to a vertical wall. A mass of 100 kg is then attached to the opposite face of the cube. The shear modulus of aluminium is 25 GPa. What is the vertical deflection of this face?
A steel plate of face area 4 cm2 and thickness 0.5 cm is fixed rigidly at the lower surface. A tangential force of 10 N is applied on the upper surface. Find the lateral displacement of the upper surface with respect to the lower surface. Rigidity modulus of steel = 8.4 × 1010 N m−2.
A metal plate measuring 1 cm × 20 cm × 40 cm is embedded with a side of 20 cm × 1 cm into a wall at one end and is pulled by a force 1.6 × 106 N parallel to the 1 cm side at the other end. The angle through which the plate is turned is (11 = 40 × 109 Pa).
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