A conical pendulum has a bob of mass 2 kg and its string makes 60° with the vertical. Take g=10 m/s². If the string tension is N newton, find N.

Question

G1 Physics · Accepted Answer

Vertical acceleration is zero, so the vertical component of tension balances weight: T cos60° = mg. Thus T×(1/2) = 2×10 = 20. Therefore T = 40 N and N=40.