14) Vectors, Scalars & Moments Flashcards
1
Q
State the difference between a scalar quantity and a vector quantity.
A
Vector has direction and a scalar does not.
2
Q
State three examples of a scalar quantity.
A
speed, mass, energy.
3
Q
State three examples of a vector quantity.
A
displacement, velocity, acceleration.
4
Q
Define the moment of a force about a point.
A
- force × perpendicular distance.
- Between the line of action of force and the point.
5
Q
State the Principle of Moments.
A
Sum of clockwise moments about a point = sum of anticlockwise moments for a system in equilibrium.
