Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 330 · 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.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 6 m, how many metres of rope must you pull?
2. 2.True or false: a fixed pulley stays in one place. (a) False (b) True
3. 3.⚖️ Turning effect = force × … (a) distance from fulcrum (b) time taken (c) mass of fulcrum (d) colour of bar
4. 4.Which of these is caused by friction? (a) a thrown ball comes down (b) brakes stop a bicycle (c) pedalling a cycle (d) squeezing a lemon
5. 5.🏋️ A force of 390 N did 390 J of work. How many metres did the object move?
6. 6.True or false: a pair of pliers is a class 1 lever (fulcrum in the middle). (a) False (b) True
7. 7.⚖️ Which class of lever is a fishing rod? (a) class 1 (b) class 2 (c) class 3
8. 8.Which of these is caused by friction? (a) pedalling a cycle (b) a rolling ball slows (c) a fridge magnet sticks (d) rain falls to the ground
9. 9.True or false: a playground slide is an inclined plane. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) oil on a squeaky hinge (b) a smooth steel slide (c) sand on a slippery path (d) skating on ice
11. 11.⚙️ Which simple machine is a flagpole rope wheel? (a) wedge (b) inclined plane (c) pulley (d) lever
12. 12.⚖️ A seesaw balances. Zoya (110 N) sits ? m from the pivot on one side; Ravi (110 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
13. 13.🏋️ A machine lifts a load of 720 N when you push with 180 N. What is its mechanical advantage (MA)?
14. 14.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
15. 15.🛞 How can we reduce friction in a machine? (a) add sand (b) press parts harder (c) make parts rough (d) oil the moving parts
16. 16.True or false: a grippy rubber sole gives more friction. (a) False (b) True
17. 17.💪 A box weighs 590 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
18. 18.True or false: a wheelbarrow is a class 1 lever (fulcrum in the middle). (a) False (b) True
19. 19.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 5 N, a carpet 6 N, sandpaper 10 N. Which surface gave the most friction? (a) ice (b) a glass sheet (c) sandpaper (d) a carpet
20. 20.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
21. 21.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
22. 22.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) make new energy (c) use a smaller force (d) switch off gravity
23. 23.Which of these is a lever? (a) a truck loading ramp (b) a jar lid (c) a well winch handle (d) a nutcracker
24. 24.⚖️ A seesaw balances. Zoya (760 N) sits 3 m from the pivot on one side; Asha (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
25. 25.⚖️ Which class of lever is a wheelbarrow? (a) class 1 (b) class 3 (c) class 2
26. 26.⚖️ A seesaw balances. Ravi (300 N) sits 1 m from the pivot on one side; Zoya (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.⚙️ Which simple machine is a nutcracker? (a) wheel and axle (b) lever (c) wedge (d) inclined plane
28. 28.🔍 Which is the odd one out? (a) a flagpole rope wheel (b) a wheelchair ramp (c) a well-bucket rope wheel (d) a crane hook block
29. 29.🔍 Which is the odd one out? (a) skating on ice (b) a tyre with deep treads (c) a wet tiled floor (d) a smooth steel slide
30. 30.Which of these is caused by magnetic force? (a) a river flows downhill (b) a fridge magnet sticks (c) a rolling ball slows (d) brakes stop a bicycle
31. 31.⚖️ A lever balances when … (a) both weights are equal (b) turning effects match (c) the bar is short (d) the fulcrum moves
32. 32.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 3 N, a carpet 6 N, sandpaper 10 N. Which surface gave the least friction? (a) a carpet (b) ice (c) a glass sheet (d) sandpaper
33. 33.🔍 Which is the odd one out? (a) a wet tiled floor (b) skating on ice (c) powder on a carrom board (d) a box pushed on carpet
34. 34.🏋️ A 13 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
35. 35.⚖️ A seesaw balances. Meena (? N) sits 1 m from the pivot on one side; Arjun (110 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
36. 36.⚙️ Which simple machine is a bottle cap? (a) screw (b) wedge (c) pulley (d) wheel and axle
37. 37.💪 A bag has a mass of 26 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
38. 38.True or false: a jar lid is a pulley. (a) False (b) True
39. 39.Which of these is caused by magnetic force? (a) rubbing hands warms them (b) a thrown ball comes down (c) a rolling ball slows (d) a compass needle turns
40. 40.True or false: a movable pulley halves the effort. (a) True (b) False

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids