← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 728 · 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 230 N did 1150 J of work. How many metres did the object move?
  2. 2.🏋️ A 1 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  3. 3.🏋️ Pushing a crate 6 m took 2100 J of work. What force was used, in newtons?
  4. 4.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
  5. 5.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) only on Mondays (d) yes, always
  6. 6.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ Pushing a crate 8 m took 400 J of work. What force was used, in newtons?
  8. 8.🏋️ A force of 420 N pushes a cart 8 m along the floor. How much work is done, in joules?
  9. 9.🏋️ 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?
  10. 10.🏋️ A force of 420 N pushes a cart 2 m along the floor. How much work is done, in joules?
  11. 11.🏋️ 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)
  12. 12.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) effort ÷ load (d) load ÷ effort
  13. 13.🏋️ A 14 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  14. 14.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ Pushing a crate 9 m took 1260 J of work. What force was used, in newtons?
  16. 16.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) joule (J) (d) newton (N)
  17. 17.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ Pushing a crate 6 m took 2280 J of work. What force was used, in newtons?
  19. 19.🏋️ A force of 410 N did 4100 J of work. How many metres did the object move?
  20. 20.🏋️ A force of 100 N did 700 J of work. How many metres did the object move?
  21. 21.🏋️ 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)
  22. 22.🏋️ A force of 30 N did 90 J of work. How many metres did the object move?
  23. 23.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ 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?
  25. 25.🏋️ A force of 90 N did 450 J of work. How many metres did the object move?
  26. 26.🏋️ Pushing a crate 9 m took 2610 J of work. What force was used, in newtons?
  27. 27.🏋️ A force of 90 N pushes a cart 3 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ Pushing a crate 2 m took 520 J of work. What force was used, in newtons?
  30. 30.🏋️ Pushing a crate 8 m took 3840 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 350 N did 1050 J of work. How many metres did the object move?
  32. 32.🏋️ A machine lifts a load of 320 N when you push with 160 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ Pushing a crate 1 m took 450 J of work. What force was used, in newtons?
  34. 34.🏋️ A force of 280 N pushes a cart 9 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ A 12 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  37. 37.🏋️ Pushing a crate 10 m took 4500 J of work. What force was used, in newtons?
  38. 38.🏋️ A 1 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  39. 39.🏋️ A 13 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ A force of 300 N pushes a cart 10 m along the floor. How much work is done, in joules?

Answer key

  1. 5
  2. 50
  3. 350
  4. through a distance
  5. no, work stays the same
  6. 300
  7. 50
  8. 3360
  9. 120
  10. 840
  11. 450
  12. load ÷ effort
  13. 560
  14. 300
  15. 140
  16. joule (J)
  17. 150
  18. 380
  19. 10
  20. 7
  21. 850
  22. 3
  23. 500
  24. 160
  25. 5
  26. 290
  27. 270
  28. 6
  29. 260
  30. 480
  31. 3
  32. 2
  33. 450
  34. 2520
  35. 950
  36. 120
  37. 450
  38. 40
  39. 130
  40. 3000

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