What is the downward force on a drawbridge at different angles?

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In summary, a hypothetical scenario is described where a person is lifting a drawbridge that is 8' long and weighs 100 pounds. The drawbridge is hinged at one end and flat on the ground. The question is posed about the downward force when the drawbridge is lifted at different angles. The conversation then shifts to a real problem involving a steel plate covering a window and a winch that will eventually open and close the window. The question remains about the force on the free edge when the bridge is flat on the ground.
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solarblast
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Let's say I have something like a drawbridge that is 8' long (and 4' wide, not that it matters) and weighs 100 pounds. Let's say it is hinged at one of the 4' edges, and is otherwise flat on the ground. Suppose I grab the unhinged end and pick it up. What will the downward force as I pull it up say at 0 degrees, 30 degrees, 60 degrees, and when it is vertical (90 degrees)?

This is a real problem, but the above is a simplified version to the structure I have. It's more like a steel plate that is covering a window, and eventually a winch at the top will open and close the window with the plate.
 
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What do you think the force on the free edge is? Say the bridge is flat on the ground.
 

1. What is the purpose of a drawbridge?

A drawbridge is a type of bridge that can be raised or lowered to allow ships or boats to pass through a waterway. It is typically used to connect two pieces of land that are separated by a body of water.

2. What forces act on a drawbridge?

There are a few different forces that act on a drawbridge. These include the weight of the bridge itself, the weight of any vehicles or people on the bridge, and the force of the water or wind pushing against the bridge. There may also be tension forces from the cables or chains used to raise and lower the bridge.

3. How is a drawbridge able to support heavy loads?

Drawbridges are designed to distribute the weight of heavy loads evenly across the bridge, using strong materials such as steel or concrete. They may also have support structures, such as piers or abutments, to help distribute the weight and prevent the bridge from collapsing.

4. What factors affect the stability of a drawbridge?

The stability of a drawbridge can be affected by several factors, including the design and construction of the bridge, the weight and distribution of loads on the bridge, and the environmental conditions such as wind and water currents. Regular maintenance and inspections are also important for ensuring the stability of a drawbridge.

5. How is the force of a drawbridge calculated?

The force of a drawbridge can be calculated using principles of physics, such as Newton's laws of motion and principles of statics. Engineers use these principles to determine the weight and distribution of loads on the bridge, as well as the strength and stability of the bridge's components. Computer simulations and physical testing can also help to determine the force and stress on a drawbridge.

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