Question
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 ........... $N$
✓
Answer
The acceleration of both the blocks $=$
$\frac{{15}}{{3x}} = \frac{5}{x}$
$\therefore$ Force on$,B = \frac{5}{x} \times 2x = 10N$
$\frac{{15}}{{3x}} = \frac{5}{x}$
$\therefore$ Force on$,B = \frac{5}{x} \times 2x = 10N$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A rubber pipe of density $1.5 \times {10^3}\,N/{m^2}$ and Young's modulus $5 \times {10^6}\,N/{m^2}$ is suspended from the roof. The length of the pipe is $8 \,m$. What will be the change in length due to its own weight
→A capacitor of capacitance $5\,\mu F$ is connected to a source of constant $emf$ of $200\,V$ for a long time, then the switch was shifted to contact $2$ from contact $1$ . The total amount of heat generated in the $500\,\Omega $ resistance, thereafter is
→In Young's double slit experiment using sodium light ( $\lambda$$= 5898 Å$), $92$ fringes are seen. If given colour ($\lambda = 5461 Å$) is used, how many fringes will be seen
→An open pipe of length $33\,cm$ resonates to a frequency of $1000\,Hz$ . The mode of vibration is: (velocity of sound $= 330\,m/s$ )
→A ray gets successively reflection from two mirrors inclined at an angle of $40^o$ . If the angle of incidence on the first mirror is $30^o$ then the net deviation of this ray after two reflections is ...
→Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is $v_0$, then the ratio of tensions in the three sections of the string is
→The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the first and the second bubble is:
An ideal heat engine exhausting heat at $77\,^oC$. To have a $30\%$ efficiency. It must take heat at...... $^oC$
→Pressure gradient has the same dimension as that of
In our solar system, there is one sun and