Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 294 · 40 questions

Engineer's tip (Add same way, subtract opposite): Push moves away, pull moves towards; force is measured in newtons (N). Same direction: add. Opposite directions: bigger − smaller, towards the bigger. Weight (N) ≈ mass (kg) × 10.

1. 1.💪 In a tug of war, one team pulls left with 100 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
2. 2.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
3. 3.💪 A cart is pulled to the right with 90 N and to the left with 100 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
4. 4.💪 Two children push a box to the right, one with 65 N and the other with 5 N. What is the net (total) force on the box, in newtons?
5. 5.True or false: pulling up your socks is a pull. (a) False (b) True
6. 6.Which of these is caused by magnetic force? (a) shoes grip the floor (b) lifting a school bag (c) brakes stop a bicycle (d) a compass needle turns
7. 7.Which of these is caused by muscular force? (a) shoes grip the floor (b) pedalling a cycle (c) rain falls to the ground (d) brakes stop a bicycle
8. 8.True or false: pushing a trolley is a pull. (a) False (b) True
9. 9.True or false: plucking a mango is a pull. (a) True (b) False
10. 10.💪 Which force is at work: rubbing hands warms them? (a) muscular force (b) friction (c) magnetic force (d) gravity
11. 11.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
12. 12.True or false: pulling a cart is a push. (a) True (b) False
13. 13.💪 A bag has a mass of 3 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
14. 14.💪 Which force is at work: brakes stop a bicycle? (a) friction (b) gravity (c) magnetic force (d) muscular force
15. 15.True or false: opening a drawer is a push. (a) False (b) True
16. 16.Which of these is caused by muscular force? (a) squeezing a lemon (b) shoes grip the floor (c) an apple falls down (d) a compass needle turns
17. 17.💪 Which force is at work: a thrown ball comes down? (a) friction (b) gravity (c) muscular force (d) magnetic force
18. 18.True or false: kicking a football is a push. (a) True (b) False
19. 19.💪 A cart is pulled to the right with 60 N and to the left with 70 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
20. 20.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) unbalanced (c) doubled (d) balanced
21. 21.💪 Which force is at work: an apple falls down? (a) magnetic force (b) muscular force (c) gravity (d) friction
22. 22.💪 In a tug of war, one team pulls right with 10 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
23. 23.💪 Which force is at work: shoes grip the floor? (a) magnetic force (b) muscular force (c) friction (d) gravity
24. 24.💪 In a tug of war, one team pulls right with 15 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
25. 25.💪 A box weighs 140 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
26. 26.Which of these is caused by friction? (a) squeezing a lemon (b) shoes grip the floor (c) a thrown ball comes down (d) pedalling a cycle
27. 27.💪 A cart is pulled to the right with 45 N and to the left with 40 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
28. 28.💪 A bag has a mass of 33 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
29. 29.True or false: pressing a doorbell is a pull. (a) True (b) False
30. 30.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) shoes grip the floor (c) rubbing hands warms them (d) a river flows downhill
31. 31.💪 In a tug of war, one team pulls left with 40 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
32. 32.💪 A bag has a mass of 40 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
33. 33.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
34. 34.💪 Which force pulls everything towards the Earth? (a) friction (b) wind (c) gravity (d) magnetism
35. 35.💪 A box weighs 410 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
36. 36.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) muscular force (c) gravity (d) friction
37. 37.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) muscular force (c) gravity (d) friction
38. 38.💪 A bag has a mass of 58 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
39. 39.💪 In which unit do we measure force? (a) metre (m) (b) newton (N) (c) second (s) (d) litre (L)
40. 40.💪 Which force is at work: pedalling a cycle? (a) friction (b) muscular force (c) gravity (d) magnetic force

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