A spring balance is graduated on sea level. If a body is weighed with this balance at consecutively increasing heights from earth's surface, the weight indicated by the balance

A spring balance measures the ________ of a body.

A spring balance extends by 2 cm due to a mass on surface of Earth. What will be the extension at a height 2R_(e ) from earth’s surface ?

A spring balance extends by 2 cm due to a mass on surface of Earth. What will be the extension at a height 2R_(e ) from earth’s surface ?

The spring balance inside a lift suspends an object. As the lift begins to ascent, the reading indicated by the spring balance will

A body is weighed on a spring balance in the wagon of a train travelling round a bend in the track which is banked in the usual way. The balance shows increase in weight by fraction n. The balance can revolve about its support point and remains at right angles to the floor of the wagon when rounding the bend when the train is travelling at speed v ?

If a spring balance is used to weigh a body, will the weight of the body be the same in vacuum and air ? Explain why

Spring balance measures ______ of a body in air.

A body attached to a spring balance weighs 10 kg on the Earth. The body attached to the same spring balance is taken to a planet where gravity is half that of the Earth. The balance will read