A bob of mass 1 kg is suspended from an inextensible string of length 1 m. When the string makes an angle `60^(@)` with vertical

A bob of mass 1 kg is suspended from an inextensible string of length 1 m. When the string makes an angle `60^(@)` with vertical, speed of the bob is 4 m/s
Net acceleration of the bob at this instant is
A. `16 m//s^(2)`
B. `20.4 m//s^(2)`
C. `18.2 m//s^(2)`
D. `10.4 m//s^(2)`

A bob of mass 1 kg is suspended from an inextensible string of length 1 m. When the string makes an angle `60^(@)` with vertical, speed of the bob is

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