A block of mass M slides on a thin film of oil. The film .Whenreleased, massmexerts tension on the cord, causing the block to accelerate. Neglect friction in the pulley and air resistance. Develop an algebraic expression for the viscous force that acts on the block when it moves at speed V. Derive a differential equation for the block speed as a function of time. Obtain an expression for the block speed as a function of time. ThemassM=5kg, m=1kg, A=25cm2,andh=0 :5mm. Ifittakes 1sforthespeedtoreach1m=s, findtheoilviscosityμ.Plotthecurve for VðtÞ.