Question

Two masses A and B measuring 4 kg and 8 kg are
connected by a string. If a force of 120 N is applied on
bigger weight, find the tension in the string between 4kg and 8 kg block​

Answer 1

Answer:

40 N

Explanation:

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Answer 2

$\huge\underline\green{\sf Answer}$

★$\large{\boxed{\sf Tension = 40 N}}$

$\huge\underline\green{\sf Solution}$

FROM NEWTONS SECOND LAW OF MOTION WE WILL CALCULATE ACCELERATION :-

★$\large{\boxed{\sf F =ma}}$

Given :-

F = 120 N

M = $\sf{m_{1}+m_{2}}$ = 8 + 4 => 12kg

a = ?

On putting value :-

$\large{\sf 120 = 12 \times a}$

$\large{\sf a ={\frac{120}{12}}}$

$\large{\sf a=10 m/{s}^{2}}$

We apply Newton equation for 4kg mass :-

F = ma

Given :-

a = $\sf{10m/{s}^{2}}$

T = ?

m=4kg

On putting value :-

$\large{\sf Tension (T) = 4 \times 10 }$

★$\large\red{\boxed{\sf T=40N}}$