What crushed this can?

When the can is immersed in the water, the pressure inside the can is lower than the pressure outside

Review

Click on the button and play ...

 One of these things is not like the other!

The idea for this game and graphic above come from a great high school physics teacher named Kelly O'Shea.

HaeLim (Emily) Wee , Class of 2017

Force on refrigerator acts in 2 directions

Force acts in 2 directions

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

St. Mary's HS Physics

Which component is responsible
for making this cart move?

Only horizontal part (Fx)
of applied force

If the angle were increased, how would it change the size of the:

Vertical component?

Increase

Horizontal component?

Decrease

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

Scale: 1 cm = 10 N

Using Trigonometry

 SinӨ = Opp = Fy Hyp F

Cross Multiply

 Fy = FsinӨ

 Fx = FcosӨ

"One size fits all"

Fy = 60. Nsin37°

Fy = 36 N Up

Fx = 60. Ncos37°

Fx = 48 N Right

Check  a2 + b2 = c2

36 N2 + 48 N2= 60 N2

Ex 2) Weight of Cart = 80 N

Horizontal Component
of Weight Force?

O N

Vertical Component
of Weight Force?

80 N

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?

Angle & Components - Flash

St. Mary's HS

Vertical component - smaller
Horizontal component - larger

Ex 4) Parallel & perpendicular components

St. Mary's H.S. Physics

F = 10. N (Weight)

F = 10. N (Weight)

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

Force (down ramp) = Fapplied sinӨ = 5.0 N
Force
(on ramp) = Fapplied cosӨ = 8.7 N

 Ranking Task Rank the parallel component from greatest to smallest   Rank the perpendicular component from greatest to smallest

Finding a horizontal component

**AP - **