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QJEEM23Phbb17: JEE Main 2023 Physics - Class 11 JEEM23Phbb17 Solution: The velocity of a particle executing SHM varies with…

The velocity of a particle executing SHM varies with displacement (x)(x) as 4v2=50−x24 v^{2}=50-x^{2} . The time period of oscillations is x7s\frac{x}{7} s . The value of xx is ___________. (\left(\right. Take π=227)\left.\pi=\frac{22}{7}\right)

Step-by-Step Verified Solution

4v2=50−x24{v^2} = 50 - {x^2}

or v=1250−x2v = {1 \over 2}\sqrt {50 - {x^2}}

Comparing the above equation with v=ωA2−x2v = \omega \sqrt {{A^2} - {x^2}}

⇒ω=12\Rightarrow \omega = {1 \over 2}

& A=50A = \sqrt {50}

so 2πT=12{{2\pi } \over T} = {1 \over 2}

⇒T=4πsec⁡\Rightarrow T = 4\pi \sec

=4×227sec⁡= 4 \times {{22} \over 7}\sec

T=887sec⁡T = {{88} \over 7}\sec

so x=88x = 88

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