To ensure packages do not surpass the weight limit, a scale is brought onto a freight elevator whenever shipments are moved between floors of a building. One such shipment has a mass of 86 kilograms. If the elevator accelerates up at a rate of 2 meters-per-second-squared, what will be the reading
on the scale?

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.