Page 24 - Physics Form 5 KSSM_Neat

Figure 1.15 shows a force, F acting on a small block
at an angle, q above the horizontal. The resolution of
force, F into two components and the magnitudes of the F
two components can be determined by following the steps
(Figure 1.16). θ

KEMENTERIAN PENDIDIKAN MALAYSIA
Figure 1.15 Force, F acting on a
block

1

Draw the horizontal
component, F and the vertical F
x
component, F to form a
y
rectangle as shown in the θ
diagram.

2

Calculate the magnitude of the F y F
components.
F = F cos θ θ
x
F = F sin θ F x
y

Figure 1.16 Steps in determining the resolution of forces

Info
Explanation with trigonometry:
F B C
Triangle ACD: cos θ = x
F F F θ
F = F cos θ y
x
F
Triangle ABC: sin θ = y θ
F A D
F = F sin θ F x
y

14 LS 1.2.1