Jump to
- Chapter 1 – Measurements and Experimentation
- Chapter 2 Motion In One Dimension
- Chapter 3 Laws Of Motion
- Chapter 4 Pressure In Fluids And Atmospheric Pressure
- Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation
- Chapter 6 Heat And Energy
- Chapter 7 Reflection Of Light
- Chapter 8 Propogation Of Sound Waves
- Chapter 9 Current Electricity
- Chapter 10 Magnetism
Selina Solutions Class 9 Physics Solutions for Exercise 5A in Chapter 5 - Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation
Prev
A block of wood is floating on water with its dimensions 50cm x 50 cm x 50 cm inside water.
Calculate the buoyant force acting on the block. Take g = 9.8N kg-1.
Answer:
Volume of the block = 50cm x 50cm x 50cm = 125000cm3
Expressing volume in m3 => 0.125 m3
g = 9.8N kg-1 or 9.8m/s2
We know that buoyant force = V ρ g
0.125 x 1000 x 9.8 = 1225N
Video transcript
"hello everyone welcome to little this is
priya
and here we have a question to calculate
the biopic
which is to calculate the biome force
acting on the block let us look into the
question
a block of wood is floating on water
with its dimensions 50
into 50 into 50 centimeter inside water
calculate the biond force acting on the
block
take g equal to 9.8
newton per kg so
what we know from this question is we
know the
volume
which is 50
into 50 into
50 centimeters so when we multiply this
we'll get
one lag 25
000 centimeter
here so the volume of the cube is
1 lakh 25 000 centimeter cube
and expressing volume in meters when we
express
this volume
in meters
then equal to zero point
one two five
meter cube so this is the volume in
meter cube and we know g equal to
9.8 newton
per kg
or we can also write this as 9.8
meters per second square
this is a gravity and
we know the biome force
equal to
bio force
equal to v rho
g as we know volume is
0.125
and we know the
density of liquid which is 1 000
and we know the gravity which is one
nine point
eight so when we multiply these three
we get the value of one thousand
two hundred and twenty five
newton this is the biome force
exhibiting by that
block of code hope you understand this
video if you like my video please
subscribe to our little channel
and if you have any doubts you can keep
a message in comment box thank you"
Related Questions
Facebook
Whatsapp
Copy Link
Chapters
Lido
Courses
Quick Links
Terms & Policies
Terms & Policies
Connect with us on social media!
2022 © Quality Tutorials Pvt Ltd All rights reserved