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snav96
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Homework Statement
http://tinypic.com/r/24mua0h/8
Homework Equations
I've done all parts except question 3, which I'm not sure. is it because the fulcrum is providing an upward force to keep the load in the air?
Tell us what you think.snav96 said:Homework Statement
http://tinypic.com/r/24mua0h/8
Homework Equations
i've done all parts except question 3, which I'm not sure. is it because the fulcrum is providing an upward force to keep the load in the air?
The Attempt at a Solution
Right.snav96 said:i think it's the fulcrum that is providing an upward force, keeping it in equilibrium
The weight of the load can be determined by using the principle of moments, which states that the weight of the load multiplied by its distance from the fulcrum must be equal to the weight of the fulcrum multiplied by its distance from the load. By measuring these two distances and knowing the weight of the fulcrum, the weight of the load can be calculated.
The fulcrum acts as a pivot point or a point of support in the lever system. It allows the effort force to be applied at a greater distance from the load, resulting in a smaller effort force needed to lift the load.
The position of the fulcrum determines the mechanical advantage of the lever system. Moving the fulcrum closer to the load will increase the effort force needed to lift the load, but the load will be lifted a greater distance. Conversely, moving the fulcrum further from the load will decrease the effort force needed, but the load will be lifted a shorter distance.
The ideal position of the fulcrum can be determined by considering the weight of the load and the effort force available. By calculating the mechanical advantage at different positions, the most efficient position of the fulcrum can be determined for lifting the specific load.
One common mistake is not considering the weight of the fulcrum itself when calculating the mechanical advantage. Another mistake is placing the fulcrum too close or too far from the load, resulting in the need for a larger effort force or a shorter lifting distance. It is also important to ensure that the fulcrum and lever are strong enough to support the weight of the load being lifted.