1.1. Example

Try these first

1. 1.

   What is a lever?

   Hint

   Think of a seesaw example.

2. 2.

   Define shear force.

   Hint

   Relate it to a scissors action.

3. 3.

   What is the primary purpose of a lever?

   • To amplify force
   • To increase weight
   • To lift at equal distances

   Hint

   Remember the seesaw analogy.

4. 4.

   True or False: The maximum stress in a lever is found at the free end.

   • True
   • False

   Hint

   Think about where forces are concentrated.

5. 5.

   You are designing a lever to lift a load of 1000 N. Describe the calculations you would perform to ensure the shaft can handle this force safely, considering design factors and safety margins.

   Hint

   Remember to consider the worst-case scenarios in your calculations.

6. 6.

   In a scenario where the lever experiences both vertical and horizontal loads, how would you adjust your analysis for complex loading conditions?

   Hint

   Visualize the free-body diagram with all forces and moments acting.