Question

Describe some advantages and some disadbantages of each of the three types of levers?​

Answer 1

Answer:

Types of Levers

At its most basic, a lever is a straight, rigid object that pivots on a fulcrum to ease lifting by using a small force applied over a large distance. There are three types of levers. Type 1 is a rigid bar with the fulcrum centered like a seesaw. A Type 2 lever has the load before the fulcrum and the force applied in front of the load, such as a wheel barrel. The final type has the load at the end, with the fulcrum placed before the force, such as the human arm.

Wear

Levers have significant weights applied at various points around their fulcrums. Over time, the weight and movement causes wear near the fulcrum point, leading to bending and eventual breaking. Bending of the rigid arm leads to an inefficient lever and reduces the mechanical advantange.

Reduction in Force

The third type of lever has the disadvantage of reducing the force exerted on the system. The force is between the load and the fulcrum. While it does create a mechanical advantage, it reduces the overall force, leading to inefficiency in the system. In the case of an arm, the bicep produces the force, and the elbow is the fulcrum.

Precision

In a perfect world, the rigid arm is perfectly rigid. However, in reality, no substance is perfectly rigid. The rigid arm bends depending on the weigh of the load. This can lead to imprecise measurements.

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