A block of mass 5 kg is suspended by two light strings 1 and 2 as shown in figure. If T, and T2 be tension in strings 1 and 2 respectively, then the value of T-72 is (g = 10 m/s2) 2 T 60° 2 30° 5 kg 50 N
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Answer:
We know that,
According to figure
T
3
sin60
0
=T
2
sin30
0
T
3
=
3
T
2
Now,
T
2
cos30
0
+T
3
cos60
0
=T
1
2
3
T
2
+
3
T
2
×
2
1
=100
2
3
4T
2
=100
T
2
=50
3
N
Hence, the tension T
2
is 50
3
N
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