Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 507 · 40 questions

Engineer's tip (Find the topic, use the idea): Find the topic: force, friction, machine, lever class, balance, pulley or work. Use that lesson’s rule — what is in the middle, load × distance = effort × distance, effort = load ÷ ropes, work = force × distance. Write the calculation before you answer.

1. 1.⚖️ What is the pivot point of a lever called? (a) the axle (b) the fulcrum (c) the effort (d) the load
2. 2.⚙️ Which simple machine is a crowbar? (a) pulley (b) screw (c) lever (d) wedge
3. 3.💪 A bag has a mass of 54 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
4. 4.🔍 Which is the odd one out? (a) a bottle opener (b) a crowbar (c) a jar lid (d) a claw hammer on a nail
5. 5.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
6. 6.True or false: a beam balance is a class 1 lever (fulcrum in the middle). (a) False (b) True
7. 7.🏋️ A 3 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
8. 8.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
9. 9.True or false: opening a drawer is a pull. (a) False (b) True
10. 10.True or false: drawing up a well bucket is a pull. (a) True (b) False
11. 11.True or false: a water tap handle is a lever. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a round doorknob (b) a well-bucket rope wheel (c) a flagpole rope wheel (d) a crane hook block
13. 13.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
14. 14.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
15. 15.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
16. 16.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
17. 17.🔍 Which is the odd one out? (a) a well winch handle (b) a well-bucket rope wheel (c) a water tap handle (d) a steering wheel
18. 18.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
20. 20.💪 Two children push a box to the right, one with 75 N and the other with 90 N. What is the net (total) force on the box, in newtons?
21. 21.⚖️ Which class of lever is a bottle opener? (a) class 2 (b) class 3 (c) class 1
22. 22.⚖️ A seesaw balances. Asha (280 N) sits ? m from the pivot on one side; Ravi (140 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
23. 23.⚖️ A seesaw balances. Asha (? N) sits 4 m from the pivot on one side; Meena (720 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
24. 24.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) closer to the pivot (c) anywhere (d) farther from the pivot
25. 25.⚙️ Which simple machine is a door stopper? (a) wheel and axle (b) wedge (c) pulley (d) screw
26. 26.🔍 Which is the odd one out? (a) a rough doormat (b) oil on a squeaky hinge (c) a box pushed on carpet (d) a grippy rubber sole
27. 27.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 200 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
28. 28.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
29. 29.True or false: a fixed pulley hangs on the rope loop. (a) True (b) False
30. 30.True or false: a grippy rubber sole gives more friction. (a) False (b) True
31. 31.🪝 Fixed or movable pulley: which one halves the effort? (a) a fixed pulley (b) a movable pulley
32. 32.🛞 More or less friction: a smooth steel slide? (a) more friction (b) less friction
33. 33.🏋️ A force of 470 N pushes a cart 2 m along the floor. How much work is done, in joules?
34. 34.True or false: a fixed pulley stays in one place. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a playground slide (b) a seesaw (c) a road up a hill (d) a truck loading ramp
36. 36.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 360 N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
37. 37.⚖️ A lever balances when … (a) turning effects match (b) both weights are equal (c) the fulcrum moves (d) the bar is short
38. 38.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 30 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
39. 39.🔍 Which is the odd one out? (a) a steering wheel (b) a water tap handle (c) a flagpole rope wheel (d) a round doorknob
40. 40.⚙️ Which simple machine is a steering wheel? (a) lever (b) pulley (c) inclined plane (d) wheel and axle

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