A plumb bob is hung from the ceilling of a train compartment. The train moves on an inclined track
Channel: Doubtnut
Date: 2020-01-19

A plumb bob is hung from the ceilling of a train compartment. The train moves on an inclined track of inclination `30^(@)` with horizontal. Acceleration of train up the plane is `a=g//2` . The angle which the string supporting the bob makes with normal to the ceilling in reqilibrium is.