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Force on refrigerator acts in 2 directions

H. Resolution of Forces - Breaking down a single vector into 2 or more vectors

Components Animation

Which component is responsible for making this cart move? 

Only horizontal part (Fx) of applied force  

Ex 1) A car is pulled with a force of 60N at angle of 37° from the horizontal. Find the vertical and horizontal components of the applied force

Scale: 1 cm = 10 N

 Using Trigonometry

Sinq = Opp = F_y
           Hyp    F

F_y   = 60Nsin37°

F_y = 36 N North

F_x = 60Ncos37°

F_x = 48 N East

Check  a² + b² = c²  

36 N² + 48 N²= 60 N²

Ex 2) Weight of cart = 80 N

• horizontal component of weight force?

• vertical component of weight force?

Answer:
 
horizontal component = 0 N
vertical component = 80 N down

Ex 3) A 50 N force at an angle of 80° has its' angle changed to 10°. 

 How will the vertical and horizontal components change?

Components Part II   Angle & Components Animations

Vertical component - smaller
Horizontal component - larger

Ex 4) Parallel & perpendicular components

Free Body Diagram   Animation

F = 10 N (Weight)

F = 10 N (Weight)

Find the force holding cart on ramp and force that acts down

Force (down ramp) = F_applied sinq = 6 N
Force (on ramp) = F_applied cosq = 8 N  

Monster Shoot Out Game Animation

Dynamics