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# Solution - Why is It Difficult to Hold a School Bag Having a Strap Made of a Thin and Strong String? - CBSE Class 9 - Science

ConceptThrust and Pressure - Pressure in Fluids

#### Question

Why is it difficult to hold a school bag having a strap made of a thin and strong string?

#### Solution

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.

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#### APPEARS IN

NCERT Science Textbook for Class 9 (with solutions)
Chapter 10: Gravitation
Q: 1 | Page no. 141

#### Reference Material

Solution for question: Why is It Difficult to Hold a School Bag Having a Strap Made of a Thin and Strong String? concept: Thrust and Pressure - Pressure in Fluids. For the course CBSE
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