Question

find the angular acceleration of rod shown in fig. COnsider hinge at C and mass of rod 4 kh

Answer 1

Answer:NSWER

R.E.F image  

By parallel axis Theorem, MOL of rod  

about hinge is  

I  

0

​  

=  

12

mL  

2

 

​  

+m(  

4

L

​  

)  

2

=  

48

7mL  

2

 

​  

 

When rod reaches the vertical position  

the center of mass of rod falls by  

L/4  

By consecration of energy  

mg(  

4

L

​  

)=  

2

1

​  

×I  

0

​  

w  

2

 

4

mgL

​  

=  

2

1

​  

×  

48

7mL  

2

 

​  

w  

2

 

∴w=  

7L

24g

​  

 

​

Explanation:

Answer 2

Answer:

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