1) Name the type of simple machine. a) Wheel and axle b) Wedge c) Pulley d) Lever 2) Name the type of simple machine. a) inclined plane b) pulley c) Wedge d) lever 3) Name the type of simple machine. a) screw b) inclined plane c) wheel and axle d) pulley 4) Identify the first class lever. a) scissors b) nut crackers c) wheelbarrow d) paddle 5) What are the parts J,K and L? a) A b) B c) C d) D 6) Find the distance of Ammar to the fulcrum. a) 1m b) 2m c) 3m d) 4m 7) Which tool is part P labelled correctly? a) A b) B c) C d) D 8) Find the weight of A. a) 500N b) 250N c) 200N d) 1000N 9) Which is the point of force (effort)? a) A b) B c) C d) D 10) At which point gives the greatest force? a) A b) B c) C d) D 11) Which of the following have the same type of lever as this diagram? a) pliers b) crowbar c) seesaw d) Ice/sugar tong 12) Which of them has the mechanical advantage of 2? a) A and B b) B and C c) B,C and D d) A, B and C 13) Which type of lever is save effort? a) First class lever b) Second class lever c) Third class lever d) All the classes of lever 14) Which pulley design can save more effort to lift the load? a) A b) B c) Both requires equal force 15) Find the force F2. a) 100N b) 200N c) 50N d) 33.33N 16) If 200N pulling force is used to lift the load, what is the maximum weight of the load? a) 50N b) 800N c) 400N d) 200N 17) Which condition can save more effort? a) Increase load arm b) Reduce effort arm c) Decrease mechanical advantage d) when effort arm greater than load arm 18) How much force (effort) is required to lift a load with 300N. a) 60N b) 250N c) 40N d) 30N

simple machine

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