Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 930 · 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 is the odd one out? (a) a nut and bolt (b) a bottle cap (c) a wood screw (d) a nutcracker
2. 2.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load ÷ effort (d) load × effort
3. 3.⚖️ Which class of lever is a seesaw? (a) class 2 (b) class 1 (c) class 3
4. 4.🏋️ A force of 240 N pushes a cart 10 m along the floor. How much work is done, in joules?
5. 5.True or false: a movable pulley stays in one place. (a) True (b) False
6. 6.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
7. 7.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 60 cm and the load at 10 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
8. 8.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
9. 9.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 6 N, sandpaper 9 N, a glass sheet 4 N. How many newtons more were needed on sandpaper than on a glass sheet?
10. 10.🛞 More or less friction: powder on a carrom board? (a) less friction (b) more friction
11. 11.⚙️ Which simple machine is a bottle opener? (a) lever (b) inclined plane (c) wheel and axle (d) wedge
12. 12.Which of these is caused by magnetic force? (a) pedalling a cycle (b) a fridge magnet sticks (c) rain falls to the ground (d) an apple falls down
13. 13.⚖️ A seesaw balances. Kabir (? N) sits 1 m from the pivot on one side; Arjun (200 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
14. 14.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 30 cm and the load at 0 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
15. 15.🪝 What does a single fixed pulley change? (a) the colour of rope (b) the size of the load (c) gravity (d) the direction of pull
16. 16.🏋️ Pushing a crate 9 m took 630 J of work. What force was used, in newtons?
17. 17.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 10 (c) 12 (d) 6
18. 18.🛞 Which surface gives the MOST friction to a sliding block? (a) ice (b) glass (c) polished marble (d) sandpaper
19. 19.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 7 N, sandpaper 10 N, ice 2 N. Which surface gave the least friction? (a) sandpaper (b) a wooden plank (c) ice (d) a carpet
20. 20.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 7 N, sandpaper 8 N, ice 2 N, a wooden plank 5 N. How many newtons more were needed on sandpaper than on ice?
21. 21.🔍 Which is the odd one out? (a) a claw hammer on a nail (b) a road up a hill (c) a bottle opener (d) a nutcracker
22. 22.True or false: a bottle opener is a lever. (a) False (b) True
23. 23.🪝 A pulley system lifts a 1200 N load with an effort of 300 N. What is its mechanical advantage (MA)?
24. 24.⚖️ Which class of lever is your forearm? (a) class 2 (b) class 3 (c) class 1
25. 25.🏋️ A force of 390 N did 3120 J of work. How many metres did the object move?
26. 26.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
27. 27.True or false: a broom when sweeping is a class 1 lever (fulcrum in the middle). (a) True (b) False
28. 28.True or false: a well-bucket rope wheel is a pulley. (a) False (b) True
29. 29.🪝 A well winch has a handle (wheel) of radius 20 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
30. 30.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 8 N, sandpaper 10 N, a glass sheet 4 N. Which surface gave the most friction? (a) a carpet (b) a glass sheet (c) sandpaper (d) a wooden plank
31. 31.🏋️ A force of 200 N pushes a cart 5 m along the floor. How much work is done, in joules?
32. 32.🔍 Which is the odd one out? (a) a playground slide (b) a well-bucket rope wheel (c) a road up a hill (d) a wheelchair ramp
33. 33.Which of these is a wheel and axle? (a) a steering wheel (b) a chisel (c) a crane hook block (d) a jar lid
34. 34.⚖️ A lever bar balances. The load is 810 N at 10 cm from the fulcrum. The effort is ? N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
35. 35.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a smaller rod (axle) (c) a sharp wedge (d) a loose rope
36. 36.💪 In which unit do we measure force? (a) second (s) (b) litre (L) (c) metre (m) (d) newton (N)
37. 37.True or false: a crowbar is a screw. (a) True (b) False
38. 38.True or false: pulling up your socks is a push. (a) True (b) False
39. 39.⚙️ A wedge is … (a) a rope on a wheel (b) a bar on a pivot (c) a wheel on a rod (d) two ramps back to back
40. 40.🔍 Which is the odd one out? (a) a rough doormat (b) powder on a carrom board (c) a box pushed on carpet (d) sand on a slippery path

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