(A) The force acting down the plane for blocks $A$ and $B$ are:$F_{A} = M g \sin 60^{\circ} = \frac{\sqrt{3}}{2} M g \approx 0.866 M g$$F_{B} = M g \s

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The block $A$ moves down the plane.

(A) The force acting down the plane for blocks $A$ and $B$ are:$F_{A} = M g \sin 60^{\circ} = \frac{\sqrt{3}}{2} M g \approx 0.866 M g$$F_{B} = M g \sin 30^{\circ} = \frac{1}{2} M g = 0.5 M g$Since the blocks are connected by a string over a pulley,they will move in the direction of the larger force.Because $F_{A} > F_{B}$,the net force causes the system to accelerate such that block $A$ moves down the plane and block $B$ moves up the plane.

Class 11 Physics Newton's Laws of Motion and Friction Motion of Body (or Connected Bodies) on an inclined plane

Easy

Two blocks each of mass $M$ are resting on a frictionless inclined plane as shown in the figure. Then:

A
The block $A$ moves down the plane.
B
The block $B$ moves down the plane.
C
Both the blocks remain at rest.
D
Both the blocks move down the plane.

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Class 11

Physics Questions

Chapter

Newton's Laws of Motion and Friction

Subtopic

Motion of Body (or Connected Bodies) on an inclined plane

$A$ truck of mass $10,000\, kg$ moves up an inclined plane rising $1$ in $50$ with a speed of $36\, km/h$. Find the power of the engine in $kW$ $(g = 10\, m/s^2)$.

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In the arrangement shown,the $2\, kg$ block is held to keep the system at rest. The string and pulley are ideal. When the $2\, kg$ block is set free,by what amount does the tension in the string change? $[g = 10\, m/s^2]$

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If $M_1 = M_2 = 5 \, kg$ and $\theta = 30^\circ$,then the tension in the string will be ........... $N$.

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$A$ truck of mass $10000 \ kg$ is moving up an inclined plane with a length of $50 \ m$ and a height of $1 \ m$ at a speed of $36 \ km/h$. What is the power of the engine in $kW$?

Easy

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$A$ truck of mass $30,000 \ kg$ moves up an inclined plane of slope $1$ in $100$ at a speed of $30 \ km/h$. The power of the truck is ................. $kW$ (given $g = 10 \ m/s^2$).

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Two blocks each of mass $M$ are resting on a frictionless inclined plane as shown in the figure. Then:

Similar Questions

$A$ truck of mass $10,000\, kg$ moves up an inclined plane rising $1$ in $50$ with a speed of $36\, km/h$. Find the power of the engine in $kW$ $(g = 10\, m/s^2)$.

In the arrangement shown,the $2\, kg$ block is held to keep the system at rest. The string and pulley are ideal. When the $2\, kg$ block is set free,by what amount does the tension in the string change? $[g = 10\, m/s^2]$

If $M_1 = M_2 = 5 \, kg$ and $\theta = 30^\circ$,then the tension in the string will be ........... $N$.

$A$ truck of mass $10000 \ kg$ is moving up an inclined plane with a length of $50 \ m$ and a height of $1 \ m$ at a speed of $36 \ km/h$. What is the power of the engine in $kW$?

$A$ truck of mass $30,000 \ kg$ moves up an inclined plane of slope $1$ in $100$ at a speed of $30 \ km/h$. The power of the truck is ................. $kW$ (given $g = 10 \ m/s^2$).

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