Question

A 40 kg child sits on a swing supported by two chains, each 3 m long. If the tension in each chain at lowest point is 350 N, then the child’s speed at the lowest point is [Take g = 10 m/s²] 

(A) 4.7 m/s 

(B) 3 m/s 

(C) 7.2 m/s 

(D) 9.1 m/s

Answer 1

Answer is (A) 4.7 m/s

T_L = 350 N

Using,