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Mechanical Properties of Solids
Define modulas of elasticity and write down its Unit and Dimensions.
Modulus of elasticity = Stress / Strain, As Strain is a dimensionless quantity being a ratio between change in dimension to the original dimension, the dimensions of Modulus of Elasticity are the same as that of stress. That is kg/mm^2 are the dimensions of Modulus of Elasticity.
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A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N?
Assertion: A rigid body can be elastic.
Reason: If s force is applied on the rigid, its dimensions may change.
The maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young's double slit experiment is
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