Why does a block of plastic released under wa | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Two forces act on an object immersed in water. One is the gravitational force,which pulls the object downwards. The other is the buoyant force,whi

Vedclass · Accepted Answer

The buoyant force is greater than the gravitational force.

Vedclass · Answer

(B) Two forces act on an object immersed in water. One is the gravitational force,which pulls the object downwards. The other is the buoyant force,which pushes the object upwards. If the upward buoyant force is greater than the downward gravitational force,the object will rise to the surface. Since the density of plastic is less than the density of water,the buoyant force exerted by the water on the plastic block is greater than the gravitational force acting on it. Therefore,the block of plastic rises to the surface when released under water.

Why does a block of plastic released under water come up to the surface of water?

Similar Questions

$A$ ball is thrown vertically upwards with a velocity of $49\, m/s$. Calculate
$(i)$ the maximum height to which it rises,
$(ii)$ the total time it takes to return to the surface of the earth.

What is the magnitude of the gravitational force between the earth and a $1 \,kg$ object on its surface (in $,N$)? (Mass of the earth is $6 \times 10^{24} \,kg$ and radius of the earth is $6.4 \times 10^6 \,m$.)

What is the importance of the universal law of gravitation?

What are the differences between the mass of an object and its weight?

What do we call the gravitational force between the earth and an object?

Vedclass Test Series

Exam Paper Generator

Online Exam Module