G7 देश क्या होते हैं? G7 Summit - Everything you need to Know!! | Doubtnut | By Bilal Khan Sir

An experimenter is inside a train. He observes that minimum speed at lowest position needed by a pendulum bob to complete a vertical circle is 10 m/s. Calculate the minimum speed (u) needed at the lowest position so as to complete the vertical circle when the train is moving horizontally at an acceleration of a = 7.5 m//s^2 . Find the maximum tension in the string during the motion. [ g = 10 m//s^2 ].