Forces Flashcards
1
Q
A force
A
Anything that causes an object to change its speed or direction
2
Q
Force
Examples
A
Pushing Gravity Magnetism Friction Pulling Weight
3
Q
Spring balance
A
Measures force
4
Q
Weight
A
Mass(kg) x acceleration due to gravity(10)
The force of attraction between the earth and the object.
Measured in newtons
5
Q
Force of gravity on earth
A
10 m/s-squared(2)
6
Q
Bag of flour is 500g
What is. weight
A
500g -:- 1000 = 0.5kg
0.5kg x 10 = 5 N
7
Q
Hooke’s law
A
The extension of a spring is proportional to the weight attached to it
8
Q
Moment
A
Force x distance from fulcrum
9
Q
Fulcrum
A
Fixed point on which a lever rotates
10
Q
Lever
A
A ridged body free to rotate on a fixed point
11
Q
Centre of gravity
A
The point through which all the weight of an object appears to act
12
Q
Newtons
A
The measurement of force
