Chapter 7 - Introduction to mechanics (Up to pg 124) Flashcards
1
Q
What is a scalar quantity?
A
A quantity that has only size but no direction
2
Q
What is a vector quantity?
A
A quantity that has both size and direction
3
Q
What is a moment?
A
A turning effect also often called torque
4
Q
What is the equation to calculate moments?
A
Force x Distance from pivot = Moment
5
Q
What is the centre of mass of an object in relation to torque?
A
The point in a body around which the resultant torque due to the pull of gravity is zero
