-8 ft- B Gate 15 ft 12 ft

Determine the height of water h above the top of the circular 2 m diameter gate which will cause it to open. The gate is hinged at the top and is initially kept closed by the action of mass M (on the lever arm) which is 220kg. Ignore from consideration the weight of the gate and the self-weight of the lever arm.

A person wearing long snowshoes can walk across a blanket of freshly fallen snow without sinking far into the snow because   (p.s. Google snowshoe if you don't know how one looks like)    snowshoes cover a larger area than a foot and so the pressure is reduced.            the snowshoes reduce the force of the person on the snow.            the large area of the snowshoe concentrates the force of the person to a point smaller than the foot.            snowshoes push less dense snow out of the way so the person stands on more solid ice below

The 2-m wide gate ab depicted on the right retains water 3 m deep. Determine the horizontal and vertical forces on the gate, then calculate magnitude and direction of the resultant force on the gate.