A stationary body of mass m is slowly lowered onto a massive plateform of mass M(M gg m) moving at a

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4-2.Friction

medium

A stationary body of mass $m$ is slowly lowered onto a massive plateform of mass $M(M \gg m)$ moving at a speed $V_p=4\,m / s$ as shown in fig. How far will the body slide along the platform $(\mu=0.2$ and $g =10\,m /\left.s ^2\right)$ ?

A$4$

B$6$

C$12$

D$8$

Solution

$a =\mu g =0.2 \times 10=2\}$
$\text { acceleration }=2\,m / s ^2$
So,$4=2 \times t \Rightarrow t =2\,sec$
$\therefore S =\frac{1}{2} \cdot 2 \cdot(2)^2=4\,m$

Standard 11

Physics

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(JEE MAIN-2019)

A stationary body of mass $m$ is slowly lowered onto a massive plateform of mass $M(M \gg m)$ moving at a speed $V_p=4\,m / s$ as shown in fig. How far will the body slide along the platform $(\mu=0.2$ and $g =10\,m /\left.s ^2\right)$ ?

Solution

Similar Questions

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