JEE MAIN - Physics (2022 - 26th June Evening Shift - No. 20)
A system to 10 balls each of mass 2 kg are connected via massless and unstretchable string. The system is allowed to slip over the edge of a smooth table as shown in figure. Tension on the string between the 7th and 8th ball is __________ N when 6th ball just leaves the table.
_26th_June_Evening_Shift_en_20_1.png)
Answer
36
Explanation
At given instant
$${a_{sys}} = {{6\,m \times g} \over {10\,m}} = {{6\,g} \over {10}}$$
$$\therefore$$ $${T_{78}} = (3m) \times {a_{sys}}$$
$$ = (3m) \times \left( {{{6g} \over {10}}} \right)$$
$$ = {{3 \times 2 \times 6 \times 10} \over {10}} = 36\,N$$
Comments (0)
