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secondary 4 | A Maths
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How to relate this question to sine graph? Can illustrate the oscillation diagram? Solve all part with step.
Date Posted: 1 month ago
Views: 72
The dot moves from O to A, back to O, then to B, and then finally back to O. This is one oscillation
a) 2a = 120 -> a =60
sin(6n) = 0 -> 6n = 2π -> n = π/3
b) v = dx/dt = 20π cos (πt/3)
max speed when cos (πt/3) = 1 -> v_max = 20π cm/s
c) a = dv/dt = - 20/3 π² sin (πt/3)
at A -> t = 1.5 -> magnitude of a = 20/3 π² cm²/s
a) 2a = 120 -> a =60
sin(6n) = 0 -> 6n = 2π -> n = π/3
b) v = dx/dt = 20π cos (πt/3)
max speed when cos (πt/3) = 1 -> v_max = 20π cm/s
c) a = dv/dt = - 20/3 π² sin (πt/3)
at A -> t = 1.5 -> magnitude of a = 20/3 π² cm²/s
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