Figure Q1(b) shows a cubical block of 30 cm side slides down along an inclined plane at a velocity of 26 ms-1. The plane is inclined at 30° to the horizontal on which there is a film of oil having dyn

Figure Q1(b) shows a cubical block of 30 cm side slides down along an inclined plane at a velocity of 26 ms-1. The plane is inclined at 30° to the horizontal on which there is a film of oil having dynamic viscosity of 2.2 x 10-3 Ns/m2. Calculate the mass of the block, m, if the film thickness is 0.2 mm.