Forces Flashcards
1
Q
Force effects
A
- Deformation, changes the shape
- Change the motion (stop or move)
- Direction
2
Q
Deformation happens in
A
- Elastic = non-permanent change
- Plastic = permanent change
3
Q
Formula for Weight/Fgravity
A
M x 9,8 (direction down): measured in Newtons
4
Q
Types of magnetic force
A
- Force of attraction
- Force of repulsion
5
Q
Unit of measurement for Force
A
Newtons (N)
6
Q
We measure force using an instrument called
A
Spring balance
7
Q
Types of Contact forces
A
- Friction
- Compression
- Tension
8
Q
Types of non-contact forces
A
- Magnetic forces
- Gravitational force (weight)
9
Q
For work to be done
A
- A force must be applied
- The object must move in the direction of the force (displacement)
10
Q
Work formula
A
W = F x 🔼x
11
Q
Power formula
A
P = w
—
🔼t
12
Q
Law of conservation of energy
A
Energy cannot be created or destroyed but is transferred from one form to another
13
Q
Kinetic energy formula
A
Ek = 1/2mv2
14
Q
Gravitational potential energy formula
A
Ep = mgh
15
Q
Mechanical energy formula
A
Emechanical = Ep + Ek
