A small stone of mass 0.4 kg tied to a m...

A small stone of mass 0.4 kg tied to a massless inextensible string is made to loop the loop Radius of the path is 4 m. Find its speed at the highest point. How would this speed change if mass of the stone is decoreased by `10%? (g =10 ms^(-2)).`

`6.32`m/s

zero

`5`m/s

`3`m/s

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