← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 336 · 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 340 N when you push with 170 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) metre (m) (d) newton (N)
  3. 3.🏋️ A force of 350 N did 350 J of work. How many metres did the object move?
  4. 4.🏋️ A machine lifts a load of 480 N when you push with 80 N. What is its mechanical advantage (MA)?
  5. 5.🏋️ 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?
  6. 6.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ A 12 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ A longer ramp to the same height needs … (a) no effort (b) more effort (c) the same effort (d) less effort
  9. 9.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
  10. 10.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A 17 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  12. 12.🏋️ Pushing a crate 1 m took 50 J of work. What force was used, in newtons?
  13. 13.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  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 12 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A force of 260 N pushes a cart 4 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A force of 390 N pushes a cart 4 m along the floor. How much work is done, in joules?
  18. 18.🏋️ A force of 10 N pushes a cart 2 m along the floor. How much work is done, in joules?
  19. 19.🏋️ Pushing a crate 4 m took 160 J of work. What force was used, in newtons?
  20. 20.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A force of 140 N pushes a cart 3 m along the floor. How much work is done, in joules?
  22. 22.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) no, work stays the same (c) yes, by half (d) only on Mondays
  23. 23.🏋️ An 18 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ A force of 260 N pushes a cart 1 m along the floor. How much work is done, in joules?
  25. 25.🏋️ Pushing a crate 5 m took 400 J of work. What force was used, in newtons?
  26. 26.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  27. 27.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
  28. 28.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ Pushing a crate 7 m took 1120 J of work. What force was used, in newtons?
  30. 30.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ Pushing a crate 8 m took 960 J of work. What force was used, in newtons?
  32. 32.🏋️ A 19 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ Pushing a crate 1 m took 70 J of work. What force was used, in newtons?
  34. 34.🏋️ A 3 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A machine lifts a load of 700 N when you push with 140 N. What is its mechanical advantage (MA)?
  37. 37.🏋️ A force of 430 N did 860 J of work. How many metres did the object move?
  38. 38.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ An 11 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ A force of 180 N pushes a cart 4 m along the floor. How much work is done, in joules?

Answer key

  1. 2
  2. joule (J)
  3. 1
  4. 6
  5. 300
  6. 950
  7. 360
  8. less effort
  9. through a distance
  10. 700
  11. 510
  12. 50
  13. 450
  14. 900
  15. 50
  16. 1040
  17. 1560
  18. 20
  19. 40
  20. 500
  21. 420
  22. no, work stays the same
  23. 540
  24. 260
  25. 80
  26. 80
  27. 4
  28. 4
  29. 160
  30. 850
  31. 120
  32. 570
  33. 70
  34. 90
  35. 3
  36. 5
  37. 2
  38. 2
  39. 330
  40. 720

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