← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 594 · 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 40 N pushes a cart 1 m along the floor. How much work is done, in joules?
  2. 2.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
  3. 3.🏋️ Pushing a crate 2 m took 280 J of work. What force was used, in newtons?
  4. 4.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) more effort (d) no effort
  5. 5.🏋️ Pushing a crate 7 m took 840 J of work. What force was used, in newtons?
  6. 6.🏋️ A force of 10 N pushes a cart 3 m along the floor. How much work is done, in joules?
  7. 7.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) joule (J) (d) newton (N)
  8. 8.🏋️ Pushing a crate 4 m took 160 J of work. What force was used, in newtons?
  9. 9.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ Pushing a crate 2 m took 540 J of work. What force was used, in newtons?
  11. 11.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) effort ÷ load (d) load ÷ effort
  12. 12.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A force of 400 N did 2000 J of work. How many metres did the object move?
  15. 15.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ Pushing a crate 1 m took 180 J of work. What force was used, in newtons?
  17. 17.🏋️ A force of 390 N pushes a cart 2 m along the floor. How much work is done, in joules?
  18. 18.🏋️ An 8 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A force of 170 N did 510 J of work. How many metres did the object move?
  20. 20.🏋️ Pushing a crate 10 m took 4500 J of work. What force was used, in newtons?
  21. 21.🏋️ Pushing a crate 1 m took 160 J of work. What force was used, in newtons?
  22. 22.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) yes, by half (d) no, work stays the same
  23. 23.🏋️ A force of 270 N did 2430 J of work. How many metres did the object move?
  24. 24.🏋️ A 3 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  26. 26.🏋️ A force of 80 N did 400 J of work. How many metres did the object move?
  27. 27.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ A force of 30 N pushes a cart 7 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A 6 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ 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?
  31. 31.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 380 N pushes a cart 5 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A force of 420 N pushes a cart 7 m along the floor. How much work is done, in joules?
  36. 36.🏋️ An 18 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.🏋️ A force of 340 N did 680 J of work. How many metres did the object move?
  38. 38.🏋️ A force of 10 N did 30 J of work. How many metres did the object move?
  39. 39.🏋️ An 8 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 220 N did 2200 J of work. How many metres did the object move?

Answer key

  1. 40
  2. through a distance
  3. 140
  4. less effort
  5. 120
  6. 30
  7. joule (J)
  8. 40
  9. 400
  10. 270
  11. load ÷ effort
  12. 300
  13. 550
  14. 5
  15. 80
  16. 180
  17. 780
  18. 240
  19. 3
  20. 450
  21. 160
  22. no, work stays the same
  23. 9
  24. 120
  25. 100
  26. 5
  27. 900
  28. 210
  29. 120
  30. 680
  31. 6
  32. 650
  33. 1900
  34. 5
  35. 2940
  36. 180
  37. 2
  38. 3
  39. 80
  40. 10

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