Adding forces
Equilibrium
F = ma
On a slope
Practice
Force 1
size
50 N
angle
0°
Force 2
size
30 N
angle
90°
Force 3
size
0 N
angle
200°
Force 4
size
0 N
angle
270°
the resultant
lay them tip to tail
split into components
Balance it with force 3
Tug of war
mass
10 kg
applied force
60 N
mass
10 kg
friction μ
0.30
free-body diagram
velocity–time graph
slope angle
30°
mass
10 kg
friction μ
0.30
push up the slope
0 N
resolve the weight along and across
adding two forces
1
—
Answer
Check
Hint
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How to think about it
Common mistakes