- A school bag has a wide shoulder strip give reason
- a sphere of iron & another of wood of the same radius when held under experience the same buoyant force give reason
- a mug full of water is lighter when it is under water in the bucket than when it is outside water give rason
- under what circumstances does a body : a. float in water b. sink in water c. remain completely submerged in water
- An iron nail floats in murcury but sinks in water give rason
- An egg shell sinks in fresh water but floats in a strong solution of salt give reason
- SO THAT THE FORCE IS DISTRIBUTED TO MORE AREA WHICH MAKES THE FORCE ACTING ON PER UNIT AREA DECREASE .BY THIS THE CHILD FEELS THE WEIGHT OF THE BAG LESSER AND IT 'S COMFORTABLE FOR HIMHER.
- BUOYANT FORCE = DENSITY OF THE FLUID X VOL. OF THE OBJECT X GRAVITY . HERE THE VOL. OF OBJECTS IS SAME ( BECAUSE THE RADIUS OF BOTH THE SPHERES IS SAME ) SO BOTH WILL EXPERIENCE EQUAL BUOYANT FORCE.
- WHEN IT IS IN THE WATER IT EXPERIENCES BUOYANT FORCE (UPTHRUST) SO IT SEEMS LIGHTER BUT WHEN IT IS OUTSIDE THE WATER IT'S WEIGHT SEEMS TO BE HEAVIER DUE TO GRAVITY OF EARTH .
- (A) WHEN IT'S D IS LESS THAN THAT OF WATER (B) WHEN IT'S DENSITY IS MORE THAN THAT OF WATER (C)WHEN DENSITY OF BODY = DENSITY OF WATER
- DENSITY OF MURCURY IS GREATER THAN DENSITY OF IRON NAIL BUT D OF NAIL IS GREATER THAN THE D OF WATER SO, AN IRON NAIL FLOATS IN MURCURY BUT SINKS IN WATER .
- THE DENSITY OF SALT WATER IS MORE THAN THAT OF FRESH WATER RESULTING IN MORE BUOYANCY . THAT IS WHY AN EGG SHELL FLOATS IN SALT WATER BUT SINKS IN FRESH WATER .