You can find this storyboard in our teacher guide for Introduction to Forces.

# Force Diagrams

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#### Storyboard Description

Force Diagrams - What is Force examples

#### Storyboard Text

• A rocket accelerating upwards
• FORCE DIAGRAM
• ﻿Thrust
• A boat floating in the water
• The forces are unbalanced as the rocket is accelerating upwards. The thrust must be larger than the weight and the drag. The resultant forces have an upwards direction.
• ﻿Weight
• Drag
• The boat is stationary, so the forces are balanced. The upthrust and the weight of the boat must be equal in magnitude, but opposite in direction.
• ﻿Weight
• ﻿Upthrust
• At the bottom of a bungee jump where the person is sta﻿tionary
• ﻿Weight
• Force from the Bungee Cord
• A person rappelling down the wall of a building with a rope
• The person at this point is stationary, so the forces must be balanced. This means the person's weight and the force from the rope must be equal in size, but opposite in direction.
• ﻿Pull of the Rope
• ﻿Friction
• The forces are balanced, as the person is not moving. The vertical component of the pull of the rope and the friction are equal and opposite to the person's weight. The horizontal component of the pull of the rope is equal and opposite to the push from the wall.
• ﻿Weight
• ﻿Push from the Wall