NTSE Stage 2 SAT 2018 Exam Question Paper

Question : 28 of 100

Marks: +1, -0

Four blocks of different masses (

m_1=1kg,m_2=2kg,m_3=1kg

and

m_4=5kg

) are connected with light, inextensible strings, as shown in figure. This system is pulled along a frictionless surface by a horizontal force of 36 N. The force pulling the block of mass m1 will be:

2 N
4 N
12 N
36 N

Validate

Solution:

Acceleration of the system

a=F/{m_1+m_2+m_3+m_4}→a=36/{1+2+1+5}=4m{/}s^2

For Body 1

F=m×a=1×4=4N

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