Equations for Forces Flashcards
1
Q
weight
A
weight= mass x gravitational field strength
W =mg
2
Q
work done
A
work done = force x distance (moved along the line of action of the force)
W = Fs
3
Q
force
A
force = spring constant x extension F = ke
4
Q
moment of a force
A
moment of a force = force x distance (perpendicular to the direction of the force)
M = Fd
5
Q
pressure
A
pressure = force normal to a surface / area of that surfa ce
p=F/A
6
Q
distance travelled
A
distance travelled = speed x time
s = vt
7
Q
acceleration
A
acceleration = change in velocity / time taken a = /_\ (triangle)v / t acceleration = final velocity - initial velocity / time taken a = v - u / t
8
Q
resultant force
A
resultant force = mass x velocity
F = ma
9
Q
momentum
A
momentum = mass x velocity p = mv
