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F. Resultants when angle between forces ≠ 90°
Ex) 5 N North & 3 N 30° S of E act concurrently (on a single point).
Find the resultant & equilibrant.
Angle not 90 degrees, can't use
Graphical Method
1. Draw vectors to scale
2. Make parallelogram
3. Draw diagonal (resultant)
4. Find magnitude & direction of vector
Graphical Method
1. Measure length, Convert to Newtons using scale 1 cm = 1 N
2. Measure angle vector makes with horizontal
R = 4.5 N 53° N of E
E = 4.5 N 53° S of W
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Monster
Shoot Out Game Show Me The Physics
AP Question Hewitt Question
Ex) Relative to the ground, an airplane gains speed when it encounters wind from behind, and loses speed when it encounters wind head on.
When it encounters wind at a right angle to the direction it is pointing, its speed relative to the ground below A. increases. B. decreases. C. is the same as if there were no wind. D. Need more information.
Increases
Try this at Home You can do this with a ping pong ball and a hair dryer
St. Mary's U. Astronomy and Physics Dept.
When a fluid, moves in a single direction, it exerts very little pressure
perpendicular to the direction of its flow.
ŠTony Mangiacapre.,
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