MHT CET Physics question
A bob of a simple pendulum of mass 'm' is displaced through 90° from mean position and released. When the bob is at lowest point, the tension in the string is [MHT-CET 2020, MHT-CET 2020]
Answer: (D)
Solution
at the bottom, so T=mg+\frac{mv^2}{L}=mg+2mg=3mg; 4mg, 2mg and mg do not match. Hence the correct option is (d).