Question

uestions
1. Why is it difficult to hold a school
bag having a strap made of a thin
and strong string?
2. What do you mean by buoyancy?
3. Why does an object float or sink
when placed on the surface of
water?​

Answer 1

Answer:

(1)answer: It is difficult to hold a school bag having a thin strap because the pressure on the shoulders is quite large. ... The smaller is the surface area; the larger will be the pressure on the surface.

(2) the tendency of a body to float or to rise when submerged in a fluid testing an object's buoyancy.

(3) This is because the buoyant force acting on the object is less than the weight of the object. If the density of the object is less than or equal to the density of the liquid, then it floats on the surface of the liquid. This is because the buoyant force acting on the object is equal to the weight of the object.