Find the best tutors and institutes for Class 9 Tuition
Search in
Why is it difficult to hold a school bag having a strap made of a thin and strong string?
It is difficult to hold a school bag having a thin strap because the pressure on the shoulders is quite large. This is because the pressure is inversely proportional to the surface area on which the force acts. The smaller is the surface area; the larger will be the pressure on the surface. In the case of a thin strap, the contact surface area is very small. Hence, the pressure exerted on the shoulder is very large.
Why is it difficult to hold a school bag having a strap made of a thin and strong string?
What do you mean by buoyancy?
pressure = force/area.
when using a bag with thin strap then the contactingarea will be less,hence pressure exerted on the shoulder will be more.
when an object is placed in a liquid ,liquid exerts an upward force on it.this tendency is called buoyancy .
Why does an object float or sink when placed on the surface of water?
if the density of an object is greater than density of liquid, then it sinks. this is because buoyancy force less than the gravitational force. similarly if the density of an object is lesser than density of liquid, then it floats. this is because buoyancy force is more than the gravitational force.
How helpful was it?
How can we Improve it?
Please tell us how it changed your life *
Please enter your feedback
UrbanPro.com helps you to connect with the best Class 9 Tuition in India. Post Your Requirement today and get connected.
Find best tutors for Class 9 Tuition Classes by posting a requirement.
Get started now, by booking a Free Demo Class
