A cork and iron nail have same weight. When immersed in water nail sinks but cork floats. Why? (1)
State Archimedes? principle. (1)
Why does the pointer of a spring balance move up when the stone suspended from it is immersed in
water? (1)
A spring balance calibrated in newton, reads 19.6 N. What will be its mass in grams? (1)
Weight of a solid Bob in air is 10N and in liquid is 9N. What is the buoyant force experienced by the
solid bob?

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