Ten $1$ rupee coins are put on the table. Each coin has a mass of $^{'} m^{'}$ . The ratio of reaction of $4 t h$ coin to the force on $5 t h$ coin :

4 / 5

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5 / 6

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6 / 5

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5 / 3

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Solution

The correct option is A $4 / 5$
Let's consider, $m =$ mass of the each coin
The reaction force on $4^{t h}$ coin will be,
$R_{4} = 4 m g$
The reaction force on $5^{t h}$ coil will be,
$F_{5} = 5 m g$
Ratio, $\frac{F_{4}}{F_{5}} = \frac{4}{5}$
The correct option is A.

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Similar questions

6^{t h}

7^{t h}

Ten one-rupee coins are put on top of each other on a table. Each coin has a mass m. Give the magnitude and direction of

(a) the force on the 7^th coin (counted from the bottom) due to all the coins on its top,

(b) the force on the 7^th coin by the eighth coin,

3, 150

1

2

5

3 : 2 : 5

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