← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 360 · 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 force of 310 N did 1240 J of work. How many metres did the object move?
  2. 2.🏋️ A force of 300 N pushes a cart 7 m along the floor. How much work is done, in joules?
  3. 3.🏋️ Pushing a crate 7 m took 210 J of work. What force was used, in newtons?
  4. 4.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) effort ÷ load (d) load ÷ effort
  5. 5.🏋️ A machine lifts a load of 340 N when you push with 170 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ Pushing a crate 2 m took 700 J of work. What force was used, in newtons?
  8. 8.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ A 20 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  10. 10.🏋️ A force of 290 N did 2030 J of work. How many metres did the object move?
  11. 11.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
  12. 12.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  13. 13.🏋️ A 10 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  14. 14.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
  17. 17.🏋️ An 8 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
  19. 19.🏋️ Pushing a crate 8 m took 3280 J of work. What force was used, in newtons?
  20. 20.🏋️ A machine lifts a load of 200 N when you push with 50 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A force of 480 N did 1440 J of work. How many metres did the object move?
  22. 22.🏋️ A force of 100 N pushes a cart 3 m along the floor. How much work is done, in joules?
  23. 23.🏋️ Pushing a crate 2 m took 160 J of work. What force was used, in newtons?
  24. 24.🏋️ Pushing a crate 8 m took 3920 J of work. What force was used, in newtons?
  25. 25.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) metre (m) (d) newton (N)
  26. 26.🏋️ Pushing a crate 6 m took 1380 J of work. What force was used, in newtons?
  27. 27.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ Pushing a crate 7 m took 1330 J of work. What force was used, in newtons?
  29. 29.🏋️ A machine lifts a load of 240 N when you push with 60 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ A force of 490 N did 980 J of work. How many metres did the object move?
  31. 31.🏋️ A force of 490 N did 3920 J of work. How many metres did the object move?
  32. 32.🏋️ A force of 470 N pushes a cart 2 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A force of 80 N did 560 J of work. How many metres did the object move?
  34. 34.🏋️ A 5 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A 17 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  36. 36.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  37. 37.🏋️ A 16 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  38. 38.🏋️ A force of 310 N pushes a cart 5 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A force of 290 N pushes a cart 2 m along the floor. How much work is done, in joules?
  40. 40.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?

Answer key

  1. 4
  2. 2100
  3. 30
  4. load ÷ effort
  5. 2
  6. 450
  7. 350
  8. 250
  9. 600
  10. 7
  11. less effort
  12. 20
  13. 500
  14. 450
  15. 2
  16. through a distance
  17. 160
  18. 6
  19. 410
  20. 4
  21. 3
  22. 300
  23. 80
  24. 490
  25. joule (J)
  26. 230
  27. 700
  28. 190
  29. 4
  30. 2
  31. 8
  32. 940
  33. 7
  34. 200
  35. 680
  36. 900
  37. 480
  38. 1550
  39. 580
  40. 4

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