← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 618 · 40 questions
TalentJR

Engineer's tip (Less force, more distance): MA = load ÷ effort. Work (J) = force (N) × distance (m); force = work ÷ distance; distance = work ÷ force. Ideal ramp: MA = length ÷ height, effort = load ÷ MA.

NameDateTime takenScore ___ / 40
  1. 1.🏋️ A machine lifts a load of 640 N when you push with 160 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ A 5 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  3. 3.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) through a distance (d) very slowly
  4. 4.🏋️ In which unit is work measured? (a) joule (J) (b) newton (N) (c) metre (m) (d) watt hour
  5. 5.🏋️ Pushing a crate 1 m took 210 J of work. What force was used, in newtons?
  6. 6.🏋️ A force of 190 N pushes a cart 2 m along the floor. How much work is done, in joules?
  7. 7.🏋️ A force of 280 N did 2240 J of work. How many metres did the object move?
  8. 8.🏋️ A 19 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A 15 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  10. 10.🏋️ Pushing a crate 1 m took 350 J of work. What force was used, in newtons?
  11. 11.🏋️ Pushing a crate 7 m took 1960 J of work. What force was used, in newtons?
  12. 12.🏋️ A machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A force of 140 N did 840 J of work. How many metres did the object move?
  14. 14.🏋️ A force of 80 N did 240 J of work. How many metres did the object move?
  15. 15.🏋️ A 9 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 750 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A force of 500 N pushes a cart 9 m along the floor. How much work is done, in joules?
  18. 18.🏋️ Pushing a crate 1 m took 280 J of work. What force was used, in newtons?
  19. 19.🏋️ A force of 400 N did 1200 J of work. How many metres did the object move?
  20. 20.🏋️ Pushing a crate 6 m took 1980 J of work. What force was used, in newtons?
  21. 21.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  22. 22.🏋️ Pushing a crate 6 m took 1680 J of work. What force was used, in newtons?
  23. 23.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ A 6 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ Pushing a crate 2 m took 180 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 290 N did 2030 J of work. How many metres did the object move?
  27. 27.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load + effort (d) load ÷ effort
  28. 28.🏋️ A 5 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  29. 29.🏋️ A machine lifts a load of 250 N when you push with 50 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A 2 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
  34. 34.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A force of 230 N did 2070 J of work. How many metres did the object move?
  36. 36.🏋️ A force of 330 N pushes a cart 1 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A force of 30 N pushes a cart 8 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ Pushing a crate 6 m took 780 J of work. What force was used, in newtons?
  40. 40.🏋️ A force of 130 N pushes a cart 8 m along the floor. How much work is done, in joules?

Answer key

  1. 4
  2. 100
  3. through a distance
  4. joule (J)
  5. 210
  6. 380
  7. 8
  8. 380
  9. 750
  10. 350
  11. 280
  12. 2
  13. 6
  14. 3
  15. 450
  16. 150
  17. 4500
  18. 280
  19. 3
  20. 330
  21. 70
  22. 280
  23. 400
  24. 300
  25. 90
  26. 7
  27. load ÷ effort
  28. 150
  29. 5
  30. 50
  31. 3
  32. 40
  33. 2
  34. 3
  35. 9
  36. 330
  37. 240
  38. 550
  39. 130
  40. 1040

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