One of the following machines always magnifies force.Question 14Answera.3rd class leverb.1st class leverc.Wheel and axled.2nd class lever

To determine which machine always magnifies force, let's analyze each option based on the characteristics of simple machines.

1. 3rd Class Lever

• In a 3rd class lever, the effort is applied between the fulcrum and the load. This type does not magnify force; instead, it increases the distance over which the load is moved.

2. 1st Class Lever

• A 1st class lever has the fulcrum between the effort and the load. This type can either magnify force or distance, depending on the position of the fulcrum.

3. Wheel and Axle

• The wheel and axle can either magnify force or distance depending on the size of the wheel relative to the axle. It does not always magnify force.

4. 2nd Class Lever

• In a 2nd class lever, the load is between the effort and the fulcrum, which always magnifies force. This occurs because you apply force over a shorter distance to lift a heavier load.

Conclusion

Among the given options, the 2nd class lever is the machine that always magnifies force.

Final Answer

d. 2nd class lever