10.1. General concept of a machine. 10.2. Important definitions. 10.3. Relation between M.A.,
V.R. and η. 10.4. Concept of friction in a machine. 10.5. Condition for reversibility of a machine.
10.6. Non-reversible/irreversible or self-locking machine. 10.7. Law of a machine. 10.8. Maximum
mechanical advantage, and efficiency. 10.9. Some lifting machines. 10.10. Simple wheel and
axle. 10.11. Wheel and differential axle. 10.12. Pulleys–Simple pulley–A single fixed pulley–A
movable and a fixed pulley–Combination of pulleys. 10.13. Weston’s differential pulley block.
10.14. Worm and worm wheel. 10.15. Single purchase crab winch. 10.16. Double purchase crab
winch. 10.17. Simple screw jack. 10.18. Differential screw jack—Highlights—Objective Type
Questions—Exercises—Theoretical Questions—Unsolved Examples.