# Forces

- Created by: hubert_frankiewicz24
- Created on: 02-06-20 13:12

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- Vectors and Scalars
- a scalar is a line with a direction
- Forces
- Contact and Non-Contact force (and resultant forces)
- A contact force is a force that need two object to toutvh to form/work
- A non-contact force is a force that doesn't need two objects to touch for it to form/work
- A resultant force is the overall force when two or more forces are acting on an object
- Examples of Non-Contact forces
- Magnetic Force
- Electric force
- Gravitational force

- Examples of Contact forces
- Applied force
- Spring force
- Drag force
- Frictional force

- Work done
- Work done = Force * Distance
- W = Joules F = Newtons d = meters
- The amount of joules 'given'/'done' onto an object

- Parallelogram and resolution of forces
- To resolve a force is doing the opposite of finding out the resultant force
- Draw a rectangle around a perpendicular arrow and find the lengths
- Create parallel lines on opposite sides to find resultant force

- Gravity and center of mass
- Gravity is generally 10 in equations but always use what is given
- The center of mass is the average position of all the masses of an object
- In a simple shape, with equal density the center of mass is in the middle

- Stretching a spring and elasticity
- Extension = extended - original
- Force and extension are proportional until the limit of proportionality
- Elastic potential = 0.5 * spring connstant * extention2
- Force = Extenstion * Spring constant

- Contact and Non-Contact force (and resultant forces)
- A vector is a line with direction and value
- Examples of Scalars
- Length
- Mass
- Power
- Temperature

- Examples of Scalars
- Acceleration
- Weight
- Drag
- Lift
- Thrust

- Examples of Scalars
- Acceleration
- Weight
- Drag
- Lift
- Thrust

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