A circular manhole cover has a weight of 250 N and a diameter of 1meter. Surcharged conditions (this means the sewer is flowing full)have developed in the sanitary sewer, with the result that theliquid (assume water) elevation in an upstream manhole is 100.01meters and rising. A free surface is present in the upstreammanhole. The elevation of the upstream manhole cover is 101.00meters. The elevation of the manhole cover in the downstreammanhole is 100.00 meters Assume ideal flow (no head loss).Determine the water level in the upstream manhole that would causethe downstream manhole cover to be lifted from the manhole. Hint:start with free body diagram and think manometers.