a seconds pendulum is mounted in a rocket Its period of ocillation decreases when the rocket
1.comes down with uniform acceleration
2.moves around the earth in a geostationary orbit
3.moves up with uniform velocity
4.moves up with uniform accelaration
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T=2πlg√T=2πlg
When the rocket moves up with acceleration 'a' pseudo acceleration on the pendulum will be 'a' along the direction of gravitational acceleration. Thus total gravitational acceleration will g'=(g + a)
periodic time of pendulum T=2π√(l/g) since is increase to g' periodic time will decrease