Question

calculate the tension in the string that whirls a 2 kg toy and horizontal circle of radius 2.5 metre when it moves at 3 metre per second​

Answer 1

Hope it solves your problem

Answer 2

Answer:

According to the question

Given

mass = 2 kg

radius = 2.5 m

velocity = 3 m/s

Tension in the string T = mg.

which is numerically equal to Fc =

$\frac{mv {}^{2} }{r}$

note :here r = R, t = T, n=N

$\frac{mv {}^{2} }{r} = t \\ \\ t = \frac{mv {}^{2} }{r} \\ t = \frac{2 \times (3)} {2.5}^{2} \\ t = \frac{2 \times 9}{2.5} \\ t = \frac{18}{2.5} \\ t = 7.2n$

hope it helps ☺