Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 962 · 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.🛞 More or less friction: a box pushed on carpet? (a) more friction (b) less friction
2. 2.💪 Which force is at work: a river flows downhill? (a) friction (b) magnetic force (c) gravity (d) muscular force
3. 3.🔍 Which is the odd one out? (a) a box pushed on carpet (b) a rough doormat (c) a wheel on ball bearings (d) a tyre with deep treads
4. 4.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) turning effects match (d) the bar is short
5. 5.🏋️ Pushing a crate 5 m took 700 J of work. What force was used, in newtons?
6. 6.⚖️ A lever bar balances. The load is 300 N at 30 cm from the fulcrum. The effort is 300 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
7. 7.⚖️ In a class 3 lever, what is in the middle? (a) the pulley (b) the load (c) the fulcrum (d) the effort
8. 8.🔍 Which is the odd one out? (a) a truck loading ramp (b) a door stopper (c) a wheelchair ramp (d) a playground slide
9. 9.Which of these is an inclined plane? (a) a truck loading ramp (b) a steering wheel (c) a crowbar (d) a water tap handle
10. 10.⚖️ Which class of lever is a wheelbarrow? (a) class 1 (b) class 3 (c) class 2
11. 11.Which of these is caused by friction? (a) shoes grip the floor (b) pedalling a cycle (c) a compass needle turns (d) a fridge magnet sticks
12. 12.💪 In which unit do we measure force? (a) litre (L) (b) metre (m) (c) second (s) (d) newton (N)
13. 13.True or false: pressing a doorbell is a pull. (a) True (b) False
14. 14.⚖️ Which class of lever is a seesaw? (a) class 2 (b) class 1 (c) class 3
15. 15.⚖️ A seesaw balances. Ravi (? N) sits 1 m from the pivot on one side; Asha (200 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
16. 16.🛞 More or less friction: a grippy rubber sole? (a) more friction (b) less friction
17. 17.🛞 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 wooden plank 9 N, a carpet 13 N. Which surface gave the least friction? (a) a glass sheet (b) ice (c) a carpet (d) a wooden plank
18. 18.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
19. 19.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
20. 20.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
21. 21.⚖️ A seesaw balances. Asha (? N) sits 2 m from the pivot on one side; Arjun (280 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
22. 22.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
23. 23.🏋️ A force of 250 N did 1500 J of work. How many metres did the object move?
24. 24.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
25. 25.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
26. 26.True or false: a tug of war is a pull. (a) False (b) True
27. 27.🏋️ A force of 60 N did 420 J of work. How many metres did the object move?
28. 28.True or false: a wood screw is a lever. (a) True (b) False
29. 29.💪 A bag has a mass of 11 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
30. 30.🏋️ Pushing a crate 9 m took 2250 J of work. What force was used, in newtons?
31. 31.True or false: pressing a doorbell is a push. (a) False (b) True
32. 32.True or false: a smooth steel slide gives more friction. (a) False (b) True
33. 33.💪 A cart is pulled to the right with 50 N and to the left with 50 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
34. 34.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, ice 3 N, a glass sheet 5 N, a carpet 8 N. How many newtons more were needed on sandpaper than on ice?
35. 35.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load + effort (d) load ÷ effort
36. 36.🏋️ A machine lifts a load of 1000 N when you push with 200 N. What is its mechanical advantage (MA)?
37. 37.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 70 cm and the load at 80 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
38. 38.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, ice 2 N, a wooden plank 5 N, a carpet 7 N. Which surface gave the most friction? (a) ice (b) sandpaper (c) a carpet (d) a wooden plank
40. 40.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)

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