A. Classify the different devices as to first-, second-, or third-class lever. Write 1 if the
device is first class, 2 if it is second class and 3 if it is third class.
1. Baseball bat
6. Oars
2. Can opener
7. Wheelbarrow
3. Broom
8. Hammer
4. Crowbar
9. Nutcracker
5. Rake
10. Tweezers​