Advertisements
Advertisements
Question
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
Advertisements
Solution
Volume of block of wood = 50 cm × 50 cm × 50 cm = 125000 cm3 = 0.125 m3
Given , g = 9.8 m/s2
Buoyant force = Vρg
= 0.125 × 1000 × 9.8 N
= 1225 N
APPEARS IN
RELATED QUESTIONS
What is upthrust ?
What causes buoyant force (or upthrust) on a boat ?
The relative density of alcohol is 0.8. Its density is
Define the term relative density of a substance.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body D having density 0.85 g m-3
Why does a piece of ice float on water?
State whether pressure is a scalar or vector?
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
A body of mass 3.5 kg displaces 1000 cm3 of water when fully immersed inside it. Calculate:
- the volume of body,
- the upthrust on body and
- the apparent weight of body in water.
The center of gravity of the floating body and the center of buoyance are in the same ______ line.
