If the weight displaced by an object weighing 50N is 10N, then find the buoyant force of water on the object. What will be the weight of an object in water?

The image is shown below:

Weight of an object = 50N

Weight of water displaced by the object = 10 N

And,

According to the Archimedes’s Principle

The upward buoyant force exerted on a body immersed in a fluid, fully or partially submerged, is equal to weight of the fluid displaced by body which acts at the centre of mass that is,

Upward Buoyant force = Weight of fluid (water) displaced by object = 10N

This gives,

Weight of object immersed in water=Weight of object in air-Buoyant Force

= 50–10

= 40 N