Physics
NULL
Medium
Question
For what displacement the P.E becomes 1/4 of its maximum value ?
A
x = x'
B
x = x'/2
✓ Official correct answer
C
x = x'/4
D
x = x'(2)/2
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A
x = x'
No member explanations yet for this option.
B
x = x'/2
No member explanations yet for this option.
C
x = x'/4
No member explanations yet for this option.
D
x = x'(2)/2
No member explanations yet for this option.
Explanation
PE in SHM is PE(x) = (1/2)kx^2, with maximum PE at x=x' (amplitude). Setting PE(x)/PE_max = 1/4 gives x^2/x'^2 = 1/4, so x = x'/2.
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