JEE Main 2014 · 12 Apr · Shift 1 · Physics Q14

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PhysicsSingle correct+4 / -1Question 14 of 90

Which of the following expressions corresponds to simple harmonic motion along a straight line, where $x$ is the displacement and a, b, c are positive constants ?

a+bx-cx^2

bx^2

a-bx+cx^2

-bx

Answer and worked solution

Official answer: D

SHM needs a restoring force proportional to displacement: $F=-bx$ . The others contain a constant or an $x^2$ term.

Topics:Simple harmonic motion

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JEE Main 2014 · 12 Apr · Shift 1, Physics question 14