🩺 NEET🧲 Physics

A point mass \( m \) is moved in a vertical circle of radius \( r \) with the help of a string. The velocity of the mass…

Q1

A point mass \( m \) is moved in a vertical circle of radius \( r \) with the help of a string. The velocity of the mass is \( \sqrt{7 \mathrm{gr}} \) at the lowest point. The tension in the string at the lowest point is

[Re-NEET 2020]

a

\( 7 \mathrm{mg} \)

b

\( 8 \mathrm{mg} \)

c

\( 1 \mathrm{mg} \)

d

\( 6 \mathrm{mg} \)

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