Question

Q.Up thrust of water acting on a wooden cube of side
10 cm immersed completely in water is (density of
water = 1000 kgm-3 and g = 10 ms-2)
(1) 5N
(2) 10 N
(3) 3N
(4) 2N​

Answer 1

Answer:

Go Ahead Use Formula Directly

Answer 2

Given:

Density of water(ρ)=1000kg/m³

Acceleration due to gravity(g)=10m/s²

Height of wooden cube immersed completely in water(h)=10cm=10/100=0.1m

So, volume of wooden cube  (V) =(0.1)³=0.001m³

To find the value of upthrust(U) of water on a wooden cube

Solution:

$Upthrust=Density of water.Volume of wooden cube. Acceleration due to gravity$

⇒ρ×V×g

⇒1000×0.001×10

⇒10N

Hence, the upthrust of water acting on a wooden cube on the side

10 cm immersed completely in water is 10N.