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प्रश्न
A body oscillates with SHM according to the equation x = 5 cos `(2π"t" + π/4)`. Its instantaneous displacement at t = 1 sec is:
पर्याय
`sqrt2/5`
`1/sqrt3`
`1/sqrt2`
`5/sqrt2`
MCQ
उत्तर
`5/sqrt2`
Explanation:
For instantaneous displacement put t = 1
x = 1
x = `5 cos [2π + π/4]`
= `5 cos π/4`
= `5/sqrt2`
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