(A) First, calculate the mass of block $A$ using Newton's second law: $F = m_A a \Rightarrow 10 = m_A \times 20 \Rightarrow m_A = 0.5 \,kg$. When bloc

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(A) First, calculate the mass of block $A$ using Newton's second law: $F = m_A a \Rightarrow 10 = m_A \times 20 \Rightarrow m_A = 0.5 \,kg$. When block $A$ is placed against block $B$ and a force $F^{\prime} = 20 \,N$ is applied, both blocks move together with a common acceleration $a$. The equation of motion for block $A$ is: $F^{\prime} - N = m_A a \Rightarrow 20 - N = 0.5 a$ $(i)$. The equation of motion for block $B$ is: $N = m_B a \Rightarrow N = 1.5 a$ $(ii)$. Adding equations $(i)$ and $(ii)$: $20 = 2 a \Rightarrow a = 10 \,m/s^2$. Substituting $a$ into equation $(ii)$: $N = 1.5 \times 10 = 15 \,N$. Thus, the force on block $B$ is $15 \,N$.

Class 11 Physics Newton's Laws of Motion and Friction Motion of Body (or Connected Bodies in horizontal or vertical) (by String or Contact)

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$A$ constant horizontal force $\overrightarrow{F}$ of magnitude $10 \,N$ is applied to a block $A$ and this produces an acceleration of magnitude $20 \,m/s^2$. If this block $A$ is then kept against another block $B$ of mass $1.5 \,kg$ as shown in the figure and a force $F^{\prime}$ of $20 \,N$ is applied, find the force on the block $B$. Neglect friction. (in $N$)

TS EAMCET 2022 All TS EAMCET

A
$15$
B
$10$
C
$20$
D
$5$

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Class 11

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Chapter

Newton's Laws of Motion and Friction

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Motion of Body (or Connected Bodies in horizontal or vertical) (by String or Contact)

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MediumAIIMS 2012

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MediumAP EAMCET 2020

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Medium

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The arrangement of a two-block system is as shown. Assuming the surfaces to be frictionless,the net force acting on the $1 \, kg$ and $2 \, kg$ blocks are,respectively:

Medium

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$A$ block of mass $1 \, kg$ is suspended by a string of mass $1 \, kg$ and length $1 \, m$ as shown in the figure. Taking $g = 10 \, m/s^2$,calculate the force exerted by the support on the string. (in $, N$)

Medium

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On a smooth plane surface,two blocks $A$ and $B$ are accelerated by applying a force of $15 \, N$ on block $A$. If the mass of block $B$ is twice that of block $A$,the force on block $B$ is ........... $N$.

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