← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 231 · 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 270 N did 810 J of work. How many metres did the object move?
  2. 2.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ A force of 190 N did 1710 J of work. How many metres did the object move?
  4. 4.🏋️ Pushing a crate 3 m took 60 J of work. What force was used, in newtons?
  5. 5.🏋️ 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?
  6. 6.🏋️ Pushing a crate 6 m took 1020 J of work. What force was used, in newtons?
  7. 7.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
  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 force of 130 N pushes a cart 5 m along the floor. How much work is done, in joules?
  10. 10.🏋️ 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?
  11. 11.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) joule (J) (d) metre (m)
  12. 12.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A machine lifts a load of 120 N when you push with 20 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ An 11 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
  17. 17.🏋️ A 2 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A force of 200 N pushes a cart 8 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A machine lifts a load of 440 N when you push with 110 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ A force of 450 N pushes a cart 3 m along the floor. How much work is done, in joules?
  24. 24.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
  25. 25.🏋️ Pushing a crate 2 m took 940 J of work. What force was used, in newtons?
  26. 26.🏋️ Pushing a crate 7 m took 70 J of work. What force was used, in newtons?
  27. 27.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ A 16 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  29. 29.🏋️ Pushing a crate 5 m took 1100 J of work. What force was used, in newtons?
  30. 30.🏋️ A machine lifts a load of 250 N when you push with 50 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ A force of 280 N did 840 J of work. How many metres did the object move?
  32. 32.🏋️ A force of 470 N pushes a cart 1 m along the floor. How much work is done, in joules?
  33. 33.🏋️ Pushing a crate 4 m took 240 J of work. What force was used, in newtons?
  34. 34.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A 6 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.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ Pushing a crate 1 m took 200 J of work. What force was used, in newtons?
  38. 38.🏋️ A force of 30 N did 270 J of work. How many metres did the object move?
  39. 39.🏋️ A force of 370 N did 2590 J of work. How many metres did the object move?
  40. 40.🏋️ A 19 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

Answer key

  1. 3
  2. 200
  3. 9
  4. 20
  5. 20
  6. 170
  7. through a distance
  8. 4
  9. 650
  10. 80
  11. joule (J)
  12. 5
  13. 6
  14. 850
  15. 220
  16. no, work stays the same
  17. 20
  18. 450
  19. 1600
  20. 100
  21. 4
  22. 5
  23. 1350
  24. 2
  25. 470
  26. 10
  27. 350
  28. 160
  29. 220
  30. 5
  31. 3
  32. 470
  33. 60
  34. 2
  35. 240
  36. 200
  37. 200
  38. 9
  39. 7
  40. 950

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