1.

A glass plate of dimensions 30xx10cm is placed on a table on which there is a layer of machine oil of thicknes 0.01 mm. The co efficient of viscosity of machine oil is 0.5Ns//m^(2). The force requird to draw the plate horizontally with a velocity of 5ms^(-1)

Answer»

3000N
3750N
7500N
15000N

Answer :C


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