Question

the bob of simple pendulum of length 1m has mass 100g and speed 1.4 m/s at lowest point . find tension in string at this moment​

Answer 1

Explanation:

$\huge\color{blue}{Your\:Answer}$

=>At lowest point, two forces are acting on the bob

a) Tension in string upwards

b) mg downwards. 

=>As it is moving along circular path hence,

$\boxed{A.T.Q}$

T−mg=mv2r

=> T=mg+mv2r

Given m = 100g = 0.1 Kg, v= 1.4 m

/s, r= l= 1 m, g=10m/s2

Hence T = 1.196 N

$<marquee>HOPE IT HELPS YOU$