Question

A body weight 200N in air and 120 when completely immersed in an overflow jar filled with water till it's spout? calculate



a) The loss of weight the body
b) The buoyancy on the body
c)The weight of water over flowed​

Answer 1

Answer:

Weight of the body in air =500gf

Weight of the body in water =450gf

∴ (i) loss of weight of the body when immersed in water =500gf−450gf=50gf.

(ii) upthrust of the body=loss in weight of the body =50gf.

(iii) upthrust =Vdg

⇒50gf×g=V×1gcm

−3

×g(densityofwater=1gcm

−3

)

⇒volumeofthebodyV=50cm

Answer 2

a) Loss of weight = 80N

b) Buoyancy on body = 80N

c) Weight of water over flowed = 80N

Explanation:

Given : weight of body in air = 200N

weight of body in water = 120N

a) loss of weight = weight in air - weight in water

= 200 - 120

=80N

b) buoyancy on body = the upthrust provided by the water on body and that is equal to the weight loss of body in water

= 80N

c) weight of water over flowed = weight displaced by water = weight lost in water

= 80N