Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 933 · 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.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
2. 2.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a sharp wedge (c) a loose rope (d) a smaller rod (axle)
3. 3.True or false: oil on a squeaky hinge gives more friction. (a) False (b) True
4. 4.Which of these is caused by gravity? (a) a river flows downhill (b) shoes grip the floor (c) rubbing hands warms them (d) a compass needle turns
5. 5.🏋️ A force of 450 N pushes a cart 10 m along the floor. How much work is done, in joules?
6. 6.🛞 Is friction helpful or a problem here: walking without slipping? (a) helpful (b) a problem
7. 7.🛞 More or less friction: sand on a slippery path? (a) less friction (b) more friction
8. 8.⚙️ Which simple machine is a well-bucket rope wheel? (a) wheel and axle (b) lever (c) inclined plane (d) pulley
9. 9.🛞 More or less friction: skating on ice? (a) less friction (b) more friction
10. 10.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
11. 11.🏋️ A force of 430 N did 3010 J of work. How many metres did the object move?
12. 12.⚙️ Which simple machine is a road up a hill? (a) pulley (b) lever (c) inclined plane (d) screw
13. 13.🔍 Which is the odd one out? (a) sand on a slippery path (b) a tyre with deep treads (c) a smooth steel slide (d) a grippy rubber sole
14. 14.True or false: a wood screw is a screw. (a) False (b) True
15. 15.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 50 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
16. 16.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 30 cm and the load at 20 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
17. 17.⚖️ A lever bar balances. The load is 80 N at 40 cm from the fulcrum. The effort is ? N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
18. 18.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 70 cm and the load at 40 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
19. 19.🪝 A bucket weighing 500 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
20. 20.Which of these is a screw? (a) a claw hammer on a nail (b) a bottle cap (c) a playground slide (d) the tip of a nail
21. 21.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
22. 22.⚖️ Turning effect = force × … (a) distance from fulcrum (b) mass of fulcrum (c) time taken (d) colour of bar
23. 23.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 20 cm and the load at 10 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
24. 24.⚖️ Which class of lever is a pair of scissors? (a) class 1 (b) class 2 (c) class 3
25. 25.Which of these is an inclined plane? (a) a nutcracker (b) a knife edge (c) a chisel (d) a truck loading ramp
26. 26.💪 A box weighs 210 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
27. 27.⚙️ A screw is really … (a) a ramp wrapped round (b) a tiny pulley (c) a kind of wheel (d) a bent lever
28. 28.🪝 Fixed or movable pulley: which one rises with the load? (a) a fixed pulley (b) a movable pulley
29. 29.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) newton (N) (d) metre (m)
30. 30.🪝 A load of 660 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
31. 31.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) start it moving (d) change its colour
32. 32.🔍 Which is the odd one out? (a) skating on ice (b) a rough doormat (c) oil on a squeaky hinge (d) a wet tiled floor
33. 33.🔍 Which is the odd one out? (a) a round doorknob (b) a water tap handle (c) a steering wheel (d) a bottle opener
34. 34.⚙️ Most simple machines make work easier by letting us … (a) make new energy (b) switch off gravity (c) use a smaller force (d) stop all friction
35. 35.🏋️ A force of 50 N did 250 J of work. How many metres did the object move?
36. 36.🛞 Is friction helpful or a problem here: writing with a pencil? (a) helpful (b) a problem
37. 37.True or false: a movable pulley hangs on the rope loop. (a) True (b) False
38. 38.⚖️ A lever balances when … (a) the fulcrum moves (b) the bar is short (c) turning effects match (d) both weights are equal
39. 39.True or false: pushing a trolley is a push. (a) True (b) False
40. 40.⚖️ Going along a lever from one end to the other, the order is: fulcrum, effort, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2

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