6 Short answe 1. Define simple machine. 2. What is lever? Give two examples. m always smaller than In which class of lever is the effort arm 3. ORIES What is a pulley? What is its function? 4. 5. What is wheel and axle? What is an inclined plane? 7. What is screw? 8. What is wedge? 6. Unit 4 1. Il objectives: A ne pressure. Give reason. have long edges. Iron cutting scissors have short cutting edges whereas cloth Cure P = F 2. is easy to open the lid of a can by using a spoon. 3. The road on the hilly region is made longer with several bends Draw the diagrams of three classes of levers showing the posic load, effort and fulcrum in order A e in brief ab e simple nu action ow that to the fa don as neel o raw a diagram of the following. Inclined plane Vheel and axle b) Combined pulley d) Wedge ge ar ippi or es​