1.Which class lever will never give you a mechanical advantage?
2.Which class lever will always give you a mechanical advantage?
3.List the 3 things that are required to do work.
Please help
My answer:
1. Class 1?
2. Class 2?
3. I don't know.
1. To determine which class lever will never give you a mechanical advantage, we need to understand how each class lever works. Lever classes are defined based on the relative positions of the load (the resistance being moved), the effort (the force applied), and the fulcrum (the point on which the lever pivots).
In a class 1 lever, the fulcrum is located between the load and the effort. The load and the effort are on opposite sides of the fulcrum. Examples of class 1 levers include a seesaw and a crowbar. In a class 1 lever, it is possible to have both a mechanical advantage (MA) greater than 1 and a mechanical disadvantage (MA) less than 1, depending on the relative positions of the load and the effort compared to the fulcrum.
Therefore, a class 1 lever can provide both mechanical advantage and mechanical disadvantage, so it is not accurate to say that it will never give you a mechanical advantage.
2. On the other hand, a class 2 lever will always give you a mechanical advantage. In a class 2 lever, the load is located between the fulcrum and the effort. The effort and the fulcrum are on opposite sides of the load. Examples of class 2 levers include a wheelbarrow and a nutcracker. Regardless of the specific positions of the load, effort, and fulcrum, a class 2 lever will always provide a mechanical advantage greater than 1.
3. In order to perform work, three things are required:
- A force must be applied.
- The force must cause displacement or movement in the direction of the force.
- There must be an object or a resistance on which the force is acting.
These three factors - force, displacement, and an object or resistance - are essential components of work. If any one of these is missing, work is not being done. For example, pushing against a wall does not involve displacement, so no work is being done.