Mechanics definitions: CAIE Physics A-level

0.0(0)
studied byStudied by 12 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/11

flashcard set

Earn XP

Description and Tags

Common definitions one needs to know for Mechanics

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

12 Terms

1
New cards

Define Force

The rate of change of momentum

2
New cards

Define the moment of a force

force x perpendicular distance (of line of action of force to the point)

3
New cards

State the principle of conservation of momentum

total momentum before (a collision) = total momentum after if no resultant external force/ for an isolated system

4
New cards

Define momentum

The mass of a body times its velocity

5
New cards

Define velocity

Change in displacement / time taken.

6
New cards

Define the centre of gravity

The point at which the whole weight of the body may be considered to act

7
New cards

Define the centre of mass

The point at which the whole mass of the body maybe considered to act

8
New cards

Define work done

The force multiplied by the displacement in the direction of the force.

9
New cards

Define power

Work done per unit time.

10
New cards

State what is meant by the mass of a body

Mass is the quantity of matter

11
New cards

State Newton’s 2nd Law

(resultant) force proportional to rate of change of momentum

12
New cards

State the principle of moments. [2 marks]

Sum of CW moments = Sum of ACW moments

about the same point for (an object in rotational) equilibrium.