(a) A water tank is completely filled with liquid water at 60rc. The tank material is such that it can withstand tension caused by a volume expansion of 4%. Determine

the maximum temperature rise allowed without jeopardizing safety. Take water coefficient expansion (B) as 5.22 x 10*1K at this temperature. (b) A weight, as shown in figure Qib-(a) has to move at constant velocity of 2 m's on an inelined surface with a coefficient of friction of 0.27. The width of the block is 20 cm. Determine the force (FI) that needs to be applied in the horizontal direction. By applying a thick oil film as shown in figure Qlb-b), the force required to push the block reduced by 45%. If dynamic viscosity of the oil is 12 cP,determine the oil layer thickness. (c) A gate with 2 m width is kacated under the water as shown in Figure Qlc. IF the force(F) required to held the gate is about 20 kN, determine the distance (dj of this force to