← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 697 · 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.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
  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.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load + effort (d) load ÷ effort
  4. 4.🏋️ Pushing a crate 9 m took 3600 J of work. What force was used, in newtons?
  5. 5.🏋️ Pushing a crate 4 m took 960 J of work. What force was used, in newtons?
  6. 6.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A force of 90 N did 810 J of work. How many metres did the object move?
  8. 8.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A machine lifts a load of 900 N when you push with 150 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A machine lifts a load of 480 N when you push with 120 N. What is its mechanical advantage (MA)?
  12. 12.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A force of 450 N pushes a cart 4 m along the floor. How much work is done, in joules?
  14. 14.🏋️ 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?
  15. 15.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) joule (J) (d) watt hour
  17. 17.🏋️ Pushing a crate 3 m took 840 J of work. What force was used, in newtons?
  18. 18.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A force of 340 N did 3060 J of work. How many metres did the object move?
  20. 20.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A force of 460 N pushes a cart 1 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A force of 340 N did 1360 J of work. How many metres did the object move?
  23. 23.🏋️ A force of 230 N did 230 J of work. How many metres did the object move?
  24. 24.🏋️ A force of 110 N pushes a cart 1 m along the floor. How much work is done, in joules?
  25. 25.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
  26. 26.🏋️ A force of 340 N pushes a cart 2 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A force of 30 N did 240 J of work. How many metres did the object move?
  28. 28.🏋️ A force of 100 N pushes a cart 7 m along the floor. How much work is done, in joules?
  29. 29.🏋️ Pushing a crate 5 m took 2450 J of work. What force was used, in newtons?
  30. 30.🏋️ A force of 500 N pushes a cart 3 m along the floor. How much work is done, in joules?
  31. 31.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  32. 32.🏋️ A 16 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ A longer ramp to the same height needs … (a) the same effort (b) more effort (c) less effort (d) no effort
  34. 34.🏋️ A force of 60 N pushes a cart 4 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A force of 250 N pushes a cart 6 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 310 N did 1860 J of work. How many metres did the object move?
  37. 37.🏋️ A force of 50 N pushes a cart 2 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A force of 130 N pushes a cart 8 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A 4 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

Answer key

  1. through a distance
  2. 100
  3. load ÷ effort
  4. 400
  5. 240
  6. 2
  7. 9
  8. 4
  9. 6
  10. 800
  11. 4
  12. 900
  13. 1800
  14. 900
  15. 900
  16. joule (J)
  17. 280
  18. 300
  19. 9
  20. 750
  21. 460
  22. 4
  23. 1
  24. 110
  25. 6
  26. 680
  27. 8
  28. 700
  29. 490
  30. 1500
  31. 950
  32. 800
  33. less effort
  34. 240
  35. 1500
  36. 6
  37. 100
  38. 1040
  39. 500
  40. 120

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