Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 250 · 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 does a single fixed pulley change? (a) the size of the load (b) gravity (c) the direction of pull (d) the colour of rope
2. 2.Which of these is a lever? (a) a well winch handle (b) a well-bucket rope wheel (c) a bottle cap (d) a crowbar
3. 3.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 3 m, how many metres of rope must you pull?
4. 4.🔍 Which is the odd one out? (a) a wheel on ball bearings (b) a wet tiled floor (c) a smooth steel slide (d) a tyre with deep treads
5. 5.True or false: a nutcracker is a class 1 lever (fulcrum in the middle). (a) False (b) True
6. 6.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) gravity (c) friction (d) magnetic force
7. 7.⚖️ A seesaw balances. Meena (? N) sits 3 m from the pivot on one side; Kabir (540 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
8. 8.⚙️ Which simple machine is a bottle cap? (a) wheel and axle (b) screw (c) pulley (d) inclined plane
9. 9.💪 Which can a force NOT do? (a) change its colour (b) start it moving (c) stop it moving (d) change its shape
10. 10.⚖️ What is the pivot point of a lever called? (a) the axle (b) the fulcrum (c) the effort (d) the load
11. 11.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) through a distance (d) very slowly
12. 12.⚖️ A lever balances when … (a) the fulcrum moves (b) the bar is short (c) both weights are equal (d) turning effects match
13. 13.⚖️ A seesaw balances. Meena (100 N) sits 1 m from the pivot on one side; Arjun (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
14. 14.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a smaller rod (axle) (c) a loose rope (d) a sharp wedge
15. 15.Which of these is caused by gravity? (a) pedalling a cycle (b) a fridge magnet sticks (c) rain falls to the ground (d) shoes grip the floor
16. 16.⚖️ A seesaw balances. Kabir (600 N) sits 2 m from the pivot on one side; Meena (400 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
17. 17.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 40 cm and the load at 80 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
18. 18.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
19. 19.⚖️ Which class of lever is a pair of pliers? (a) class 2 (b) class 3 (c) class 1
20. 20.💪 A box weighs 220 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
21. 21.True or false: a window blind cord is a lever. (a) True (b) False
22. 22.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, ice 1 N, a wooden plank 3 N, a carpet 5 N. Which surface gave the most friction? (a) a wooden plank (b) sandpaper (c) ice (d) a carpet
23. 23.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) effort ÷ load (d) load ÷ effort
24. 24.Which of these is a wheel and axle? (a) a playground slide (b) the tip of a nail (c) a door stopper (d) a steering wheel
25. 25.🔍 Which is the odd one out? (a) a grippy rubber sole (b) a rough doormat (c) a wheel on ball bearings (d) a tyre with deep treads
26. 26.True or false: an axe blade is a pulley. (a) True (b) False
27. 27.🪝 Fixed or movable pulley: which one stays in one place? (a) a fixed pulley (b) a movable pulley
28. 28.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 10 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
29. 29.⚙️ Which simple machine is a well-bucket rope wheel? (a) inclined plane (b) lever (c) pulley (d) screw
30. 30.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
31. 31.🏋️ A 3 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
32. 32.⚙️ Which simple machine is a truck loading ramp? (a) inclined plane (b) lever (c) screw (d) pulley
33. 33.True or false: a claw hammer on a nail is a lever. (a) False (b) True
34. 34.💪 A bag has a mass of 52 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
35. 35.⚙️ Which simple machine is a crowbar? (a) wedge (b) lever (c) pulley (d) inclined plane
36. 36.🪝 Fixed or movable pulley: which one halves the effort? (a) a fixed pulley (b) a movable pulley
37. 37.True or false: a chisel is a lever. (a) False (b) True
38. 38.True or false: a movable pulley rises with the load. (a) False (b) True
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 3 N, a glass sheet 7 N, a carpet 11 N, sandpaper 13 N. Which surface gave the most friction? (a) a carpet (b) a glass sheet (c) sandpaper (d) ice
40. 40.🛞 Friction acts … (a) against the motion (b) only upwards (c) only on ice (d) with the motion

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