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Lakhmir Singh Solutions Class 8 Science Solutions for Exercise in Chapter 11 - Force and Pressure
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a) Define pressure. What are the relation between pressure, force, and area? State the units in which pressure is measured.
b) Explain why school bags are provided with wide straps to carry them?
Answer:
a) The pressure is defined as force acting per unit area. Different units of pressure are Pascal, Newton per square meter, atmosphere, torr, bar, and meters seawater.
The relation between pressure, force, and the area are:
P = F/A
b) School bags are provided with wide straps to carry them because the force gets distributed throughout thereby reducing the pressure.
Video transcript
"hey kids welcome to leto q a video
i am vineeth your lido tutor glad to
bring you this question on your
screen
so define pressure what is what are the
relation between
pressure force and area state the units
in which
pressure is measured so the pressure is
defined as the
force acting per unit area
pressure
is the force acting per
unit area
the units of pressure are
different units
of pressure are
pascal
newton per square meter
newton per square meter then we have
tor bar and meter sea water
tor bar and
meters seawater
and the relation between pressure
the relation
between pressure
force
and area is
pressure is equal to force per unit area
now the second one explain why school
bags are provided with white straps to
carry them
so b school bags are provided with white
straps
because the force gets distributed
through thereby reducing the pressure
so due to white straps
the force
gets distributed
and
pressure is reduced
thus
school bags are provided with white
straps
provided
with white straps
to carry them if you still have a doubt
please leave a comment below do like the
video and subscribe to our channel
i'll see you in our next video until
then bye kids
keep practicing"
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