A pendulum with a bob of mass 150 g has the same period as a thin rod of the same mass and length 42 cm when the rod is pivoted about its end. What is the length of the pendulum?
A) 13 cm
B) 14 cm
C) 21 cm
D) 28 cm

Question

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The Answer of A pendulum with a bob of mass 150 g has the same period as a thin rod of the same mass and length 42 cm when the rod is pivoted about its end. What is the length of the pendulum?
A) 13 cm
B) 14 cm
C) 21 cm
D) 28 cm

A Pendulum with a Bob of Mass 150 G Has