A pendulum bob has corrected diameter 3.20 cm. The distance from the suspension point to the lower end of the bob is 104.6 cm. Enter the effective pendulum length in millimetres.
Physics · Unit dimension and error · vernier callipers and screw gauge
JEE Mains NEET

Question

A pendulum bob has corrected diameter 3.20 cm. The distance from the suspension point to the lower end of the bob is 104.6 cm. Enter the effective pendulum length in millimetres.

G1 Physics · Accepted Answer

Bob radius = 1.60 cm. Effective length = 104.6 − 1.6 = 103.0 cm = 1030 mm.