Question

a string of length l fixed at one end carries mass m at other end.the string makes 2/π revolution per second around the axis through the fixed end the tension in the string is​

Answer 1

Answer:

Explanation:

The bob is doing circluar motion.

So, tension in string = Centripetal force

=> T = Fc

=> T = mv²/r

-------------------------------------

1 revolution = 2πl unit

2/π revoulion = 2π²l unit

∴ Tangential velocity = 2π²l unit²/s

------------------------------------------

T = m(2π²l)²/l

=> T = 4mπ⁴l

_____________________

AMrit

Answer 2

Explanation:

so this is the correct answer