The elevator shown in figure is descending with an acceleration of 2 ms-2 The mass of the block A = 0.5 kg. The force exerted by the block A on the block B is: Take g = 10 m/s2

Question

The elevator shown in figure is descending with an acceleration of 2 ms-2 The mass of the block A = 0.5 kg. The force exerted by the block A on the block B is: Take g = 10 m/s2 <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/73d73c5d007799436e3c062f4538eecf-.png" /> (A) 2 N (B) 4 N (C) 6 N (D) 8 N

Tardigrade Admin · Accepted Answer

Let A applies a force R on B, Then B also applies an opposite force R on A as shown <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/7fb1c01cf5f111ccde64717c008db398-.png" /> For A: mg -R =ma ⇒ R=m(g-a) =0.5[10-2] =4 N

Q. The elevator shown in figure is descending with an acceleration of $2 m s^{- 2}$ The mass of the block $A = 0.5 k g$ . The force exerted by the block A on the block B is: Take $g = 10 m / s^{2}$

$2 N$

$4 N$

$6 N$

$8 N$

Let $A$ applies a force $R$ on $B$ ,

Then B also applies an opposite force R on A as shown

For $A : m g - R = ma$

$\Rightarrow R = m (g - a)$

$= 0.5 [10 - 2] = 4 N$

Q. The elevator shown in figure is descending with an acceleration of 2ms−2 The mass of the block A=0.5kg. The force exerted by the block A on the block B is: Take g=10m/s2

2N

4N

6N

8N