Question

A body connected with a string crosses the topmost point of a verticle circle with critical speed. What will be its tangential acceleration at the top most
point?
1. zero
2. g
3. 2g
4. g/2​

Answer 1

Answer:

It's tangential acceleration at the top  most point is 3g

Explanation:

$v^{2}$ - gr = 2gr

$v^{2}$ = 3gr

$\frac{v^{2} }{r}$ = 3g

so, the centripetal acceleration i.e tangential acceleration is 3g