Engineering Worksheet: Part 2 Test

Engineering lesson 16: Part 2 test: forces and machines · Set 870 · 40 questions

Engineer's tip (Find the topic, use the idea): Find the topic: force, friction, machine, lever class, balance, pulley or work. Use that lesson’s rule — what is in the middle, load × distance = effort × distance, effort = load ÷ ropes, work = force × distance. Write the calculation before you answer.

1. 1.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🔍 Which is the odd one out? (a) a knife edge (b) a chisel (c) a flagpole rope wheel (d) a door stopper
3. 3.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
4. 4.💪 A cart is pulled to the right with 45 N and to the left with 50 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
5. 5.🏋️ A force of 30 N pushes a cart 9 m along the floor. How much work is done, in joules?
6. 6.⚖️ A seesaw balances. Kabir (120 N) sits 1 m from the pivot on one side; Zoya (120 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
7. 7.🪝 What does a single fixed pulley change? (a) the colour of rope (b) gravity (c) the size of the load (d) the direction of pull
8. 8.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
9. 9.⚖️ Which class of lever is a fishing rod? (a) class 3 (b) class 1 (c) class 2
10. 10.🔍 Which is the odd one out? (a) a steering wheel (b) a well winch handle (c) a knife edge (d) a water tap handle
11. 11.🏋️ A 20 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
12. 12.💪 In a tug of war, one team pulls left with 15 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
13. 13.⚙️ Which simple machine is a chisel? (a) pulley (b) inclined plane (c) screw (d) wedge
14. 14.True or false: a well-bucket rope wheel is a wheel and axle. (a) True (b) False
15. 15.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
16. 16.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
17. 17.⚖️ Turning effect = force × … (a) colour of bar (b) mass of fulcrum (c) time taken (d) distance from fulcrum
18. 18.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
19. 19.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 10 (c) 6 (d) 3
20. 20.True or false: a movable pulley hangs on the rope loop. (a) False (b) True
21. 21.💪 A force is a … (a) type of sound (b) unit of time (c) push or a pull (d) kind of colour
22. 22.💪 In which unit do we measure force? (a) metre (m) (b) litre (L) (c) newton (N) (d) second (s)
23. 23.True or false: a pair of scissors is a class 2 lever (load in the middle). (a) True (b) False
24. 24.True or false: kicking a football is a pull. (a) True (b) False
25. 25.🪝 A bucket weighing 350 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
26. 26.True or false: a fixed pulley needs effort = load. (a) True (b) False
27. 27.⚖️ A lever bar balances. The load is 1000 N at 10 cm from the fulcrum. The effort is 100 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
28. 28.💪 Which force is at work: lifting a school bag? (a) magnetic force (b) gravity (c) friction (d) muscular force
29. 29.⚖️ A seesaw balances. Ravi (560 N) sits 1 m from the pivot on one side; Zoya (140 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
30. 30.🪝 A bucket weighing 110 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
31. 31.True or false: a fixed pulley is on a flagpole top. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a grippy rubber sole (b) a wheel on ball bearings (c) a rough doormat (d) chalk on a gym bar
33. 33.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 8 N, sandpaper 11 N, ice 2 N, a glass sheet 4 N. Which surface gave the most friction? (a) a wooden plank (b) ice (c) sandpaper (d) a glass sheet
34. 34.⚖️ A seesaw balances. Asha (150 N) sits ? m from the pivot on one side; Zoya (300 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
35. 35.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 2 N, a carpet 3 N, sandpaper 4 N, a glass sheet 1 N. Which surface gave the most friction? (a) a wooden plank (b) a carpet (c) sandpaper (d) a glass sheet
36. 36.🏋️ A force of 490 N pushes a cart 3 m along the floor. How much work is done, in joules?
37. 37.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) through a distance (d) only upwards
38. 38.True or false: a fixed pulley stays in one place. (a) False (b) True
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 1 N, a wooden plank 3 N, a carpet 7 N, sandpaper 8 N. Which surface gave the least friction? (a) a carpet (b) a glass sheet (c) a wooden plank (d) sandpaper
40. 40.Which of these is caused by gravity? (a) pedalling a cycle (b) brakes stop a bicycle (c) rain falls to the ground (d) shoes grip the floor

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