Engineering Worksheet: Forces
Engineer's tip (Add same way, subtract opposite): Push moves away, pull moves towards; force is measured in newtons (N). Same direction: add. Opposite directions: bigger − smaller, towards the bigger. Weight (N) ≈ mass (kg) × 10.
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- 1.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) balanced (d) unbalanced
- 2.Which of these is caused by friction? (a) pedalling a cycle (b) an apple falls down (c) a fridge magnet sticks (d) rubbing hands warms them
- 3.💪 A box weighs 370 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 4.💪 A bag has a mass of 58 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 5.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
- 6.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
- 7.💪 A box weighs 60 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 8.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
- 9.💪 A force is a … (a) type of sound (b) unit of time (c) kind of colour (d) push or a pull
- 10.💪 In a tug of war, one team pulls left with 40 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
- 11.💪 Two children push a box to the right, one with 10 N and the other with 85 N. What is the net (total) force on the box, in newtons?
- 12.True or false: kicking a football is a pull. (a) False (b) True
- 13.💪 A box weighs 110 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 14.Which of these is caused by magnetic force? (a) squeezing a lemon (b) a fridge magnet sticks (c) pedalling a cycle (d) a thrown ball comes down
- 15.💪 A box weighs 30 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 16.True or false: opening a drawer is a pull. (a) True (b) False
- 17.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
- 18.💪 Which can a force NOT do? (a) stop it moving (b) start it moving (c) change its colour (d) change its shape
- 19.💪 A box weighs 260 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 20.💪 Which force is at work: an apple falls down? (a) magnetic force (b) gravity (c) friction (d) muscular force
- 21.💪 A cart is pulled to the right with 85 N and to the left with 85 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
- 22.💪 A box weighs 40 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 23.Which of these is caused by muscular force? (a) a magnet picks up pins (b) a fridge magnet sticks (c) a thrown ball comes down (d) squeezing a lemon
- 24.💪 Two children push a box to the right, one with 10 N and the other with 70 N. What is the net (total) force on the box, in newtons?
- 25.💪 A box weighs 200 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 26.💪 Two children push a box to the right, one with 25 N and the other with 55 N. What is the net (total) force on the box, in newtons?
- 27.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
- 28.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
- 29.💪 Which force is at work: rain falls to the ground? (a) friction (b) muscular force (c) gravity (d) magnetic force
- 30.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
- 31.💪 A cart is pulled to the right with 40 N and to the left with 45 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
- 32.Which of these is caused by magnetic force? (a) pedalling a cycle (b) a rolling ball slows (c) an apple falls down (d) a magnet picks up pins
- 33.True or false: pulling up your socks is a push. (a) False (b) True
- 34.True or false: pushing a trolley is a push. (a) False (b) True
- 35.Which of these is caused by friction? (a) pedalling a cycle (b) a river flows downhill (c) an apple falls down (d) brakes stop a bicycle
- 36.True or false: hitting a cricket ball is a pull. (a) True (b) False
- 37.💪 A cart is pulled to the right with 100 N and to the left with 90 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
- 38.True or false: a tug of war is a push. (a) True (b) False
- 39.💪 A bag has a mass of 14 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 40.💪 In a tug of war, one team pulls left with 25 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
Answer key
- balanced
- rubbing hands warms them
- 37
- 580
- a push
- a pull
- 6
- a push
- push or a pull
- 35
- 95
- False
- 11
- a fridge magnet sticks
- 3
- True
- a push
- change its colour
- 26
- gravity
- no net force
- 4
- squeezing a lemon
- 80
- 20
- 80
- a pull
- a push
- gravity
- a pull
- to the left
- a magnet picks up pins
- False
- True
- brakes stop a bicycle
- False
- to the right
- False
- 140
- 10
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