Math, asked by janvibhathal, 4 months ago

A heavy uniform rod of mass 7 kg and length 5 metres is suspended from a from point by inextensible strings fastened to its ends , their lengths beings 3 and 4 m . Find the tensions in the string.​

Answers

Answered by anthony31
0

Answer:

Step-by-step explanation:

ension in the string before snapping,

2T=mg

Torque on the rod,

T=  

2

mgl

​  

 

⇒Iα=  

2

mgl

​  

 

⇒  

3

1

​  

ml  

2

α=  

2

mgl

​  

 

⇒α=  

2l

3g

​  

 

acceleration with which the centre of mass falls down,

a=  

2

​  

 

=  

4

3g

​  

 

∴ma=F  

D

​  

−F  

U

​  

 

⇒m  

4

3g

​  

=mg−T  

 

⇒T  

=mg−  

4

3mg

​  

 

⇒T  

=  

4

mg

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