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How are forces in opposite directions handled when finding the resultant?
A
The string has negligible mass.
B
The component of weight perpendicular to an inclined plane, acting into the plane, is mgcosθ\boxed{mg\cos\theta}mgcosθ.
C
For a body in equilibrium, ∑F=0\boxed{\sum F=0}∑F=0.
D
Give them opposite signs.
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4.9.4 Forces and Newton's laws (A-level only) Flashcards
23 flashcards on WJEC A Level Maths 4.9.4 Forces and Newton's laws (A-level only): the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4.