Physics, asked by nikitabidlan05, 7 months ago

what is tension in string in given figure,if coefficient of friction is 0.2. M1:20kg and m2:40kg

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Answers

Answered by mbakshi37
1

Answer:

Tension = 130 N

Explanation:

Force along incline on 40 Kg Mass= Wight componen-Tension-Friction

= 40 Sin30 . g  -Tension- 40.Mu.Cos 30 g

= 200-T-70

40 . a = 200 - T-70            

40a    = 130  - T             ....(1)

Force along incline on 20 Kg Mass

=Tension -20 Sin30 . g  - 20Mu.Cos30 g         upwards

= T-100-35

20 . a = T-135-    ....(2)

T = 20 a+135         ....(3)

40 a  = 130 -2a-135

20 a= -5

a=-1/4

T=-5+135

T= 130 N

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