Question

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9. GRAVITATION

easy

You find your mass to be $42\, kg$ on a weighing machine. Is your mass more or less than $42\, kg$?

Option A

Option B

Option C

Option D

Solution

When you weigh your body, an upward force acts on it. This upward force is the buoyant force. As a result, the body gets pushed slightly upwards, causing the weighing machine to show a reading less than the actual value.

Std 9

Science

What do you mean by acceleration due to gravity?

easy

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

medium

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

medium

Why will a sheet of paper fall slower than one that is crumpled into a ball?

easy

A ball thrown up vertically returns to the thrower after $6\, s$. Find

$(a)$ the velocity with which it was thrown up,

$(b)$ the maximum height it reaches, and

$(c)$ its position after $4\, s$.

medium

You find your mass to be $42\, kg$ on a weighing machine. Is your mass more or less than $42\, kg$?

Solution

Similar Questions

What do you mean by acceleration due to gravity?

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

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

Why will a sheet of paper fall slower than one that is crumpled into a ball?

A ball thrown up vertically returns to the thrower after $6\, s$. Find $(a)$ the velocity with which it was thrown up, $(b)$ the maximum height it reaches, and $(c)$ its position after $4\, s$.

A ball thrown up vertically returns to the thrower after $6\, s$. Find

$(a)$ the velocity with which it was thrown up,

$(b)$ the maximum height it reaches, and

$(c)$ its position after $4\, s$.