Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 820 · 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.⚙️ Which simple machine is a claw hammer on a nail? (a) inclined plane (b) pulley (c) lever (d) screw
2. 2.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
3. 3.🏋️ A force of 430 N pushes a cart 8 m along the floor. How much work is done, in joules?
4. 4.True or false: chalk on a gym bar gives more friction. (a) True (b) False
5. 5.True or false: a tug of war is a push. (a) False (b) True
6. 6.🪝 A pulley system lifts a 560 N load with an effort of 280 N. What is its mechanical advantage (MA)?
7. 7.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
8. 8.⚖️ Which class of lever is a crowbar? (a) class 2 (b) class 3 (c) class 1
9. 9.True or false: pulling up your socks is a push. (a) False (b) True
10. 10.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) change its colour (d) start it moving
11. 11.True or false: closing a drawer is a pull. (a) False (b) True
12. 12.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
13. 13.True or false: your forearm is a class 3 lever (effort in the middle). (a) False (b) True
14. 14.Which of these is caused by magnetic force? (a) rubbing hands warms them (b) shoes grip the floor (c) a fridge magnet sticks (d) pedalling a cycle
15. 15.⚖️ Turning effect = force × … (a) distance from fulcrum (b) mass of fulcrum (c) time taken (d) colour of bar
16. 16.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
17. 17.True or false: a wood screw is a screw. (a) False (b) True
18. 18.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a wooden plank 8 N, a carpet 9 N, sandpaper 13 N. Which surface gave the least friction? (a) sandpaper (b) a wooden plank (c) a glass sheet (d) a carpet
19. 19.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) very slowly (d) through a distance
20. 20.💪 A bag has a mass of 6 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
21. 21.🛞 Is friction helpful or a problem here: tyres wearing down? (a) helpful (b) a problem
22. 22.🏋️ A force of 130 N pushes a cart 3 m along the floor. How much work is done, in joules?
23. 23.🔍 Which is the odd one out? (a) the tip of a nail (b) a flagpole rope wheel (c) a knife edge (d) an axe blade
24. 24.⚖️ A lever bar balances. The load is 900 N at ? cm from the fulcrum. The effort is 100 N at 90 cm from the fulcrum on the other side. What is the missing distance in centimetres?
25. 25.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, by half (c) no, work stays the same (d) yes, always
26. 26.💪 Two children push a box to the right, one with 30 N and the other with 30 N. What is the net (total) force on the box, in newtons?
27. 27.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 9 N, sandpaper 11 N, ice 3 N, a glass sheet 7 N. How many newtons more were needed on sandpaper than on ice?
28. 28.True or false: a tug of war is a pull. (a) False (b) True
29. 29.Which of these is a wheel and axle? (a) a flagpole rope wheel (b) a playground slide (c) an axe blade (d) a round doorknob
30. 30.🛞 More or less friction: a grippy rubber sole? (a) less friction (b) more friction
31. 31.🪝 What does a single fixed pulley change? (a) the direction of pull (b) the colour of rope (c) gravity (d) the size of the load
32. 32.🔍 Which is the odd one out? (a) chalk on a gym bar (b) a wheel on ball bearings (c) a tyre with deep treads (d) a box pushed on carpet
33. 33.Which of these is an inclined plane? (a) a nutcracker (b) a round doorknob (c) a crowbar (d) a road up a hill
34. 34.Which of these is a wheel and axle? (a) a steering wheel (b) a wood screw (c) a jar lid (d) a bottle cap
35. 35.⚖️ A seesaw balances. Ravi (600 N) sits ? m from the pivot on one side; Arjun (200 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
36. 36.⚖️ On a seesaw, a heavier child should sit … (a) closer to the pivot (b) anywhere (c) on the pivot (d) farther from the pivot
37. 37.⚙️ Which simple machine is a jar lid? (a) pulley (b) screw (c) lever (d) inclined plane
38. 38.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 10 cm and the load at 90 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 9 N, sandpaper 11 N, a glass sheet 2 N. Which surface gave the least friction? (a) a carpet (b) sandpaper (c) a wooden plank (d) a glass sheet
40. 40.Which of these is caused by muscular force? (a) lifting a school bag (b) a compass needle turns (c) a rolling ball slows (d) a fridge magnet sticks

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