MCQ
On a smooth plane surface $($figure$)$ two block $A$ and $B$ are accelerated up by applying a force $15\, N$ on $A$. If mass of $B$ is twice that of $A$, the force on $B$ is $.......... N$
- A$30$
- B$15$
- C$10$
- D$5$
✓
Answer
The acceleration of both the blocks $= \frac{{15}}{{3x}} = \frac{5}{x}$
$\therefore$ Force on $B = \frac{5}{x} \times 2x = 10N$
$\therefore$ Force on $B = \frac{5}{x} \times 2x = 10N$
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