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Two blocks A and B of masses 2kg and 3kg...

Two blocks A and B of masses 2kg and 3kg respectively, are placed on a horizontal surface as shown (one on top of other). Find the ratio of magnitude of normal reaction between A and B to that between B and the surface, respectively

A

1

B

`2/5`

C

`5/2`

D

`3/5`

Text Solution

Verified by Experts

The correct Answer is:
b

for A |N|
a=0 N=m =20 N
M g
For B |N |
a=0 N=N +M g=20 +30 =50 N
N+Mg
`therefore (N_(1))/(N_(2))=2/5`
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