Question

b)
A uniform rod of length 80 cm is supportedat 10 cm mark when a 750 gf weight issuspended from the 0cm mark keeping the rodin
equilibrium. Calculate the mass of the rod.
​

Answer 1

A uniform rod of length L and weight W is suspended horizontally by two vertical ropes as shown. The first rope is attached to the left end of the rod while the second is attached to the left end of the rod while the second rope is attached a distance L/4 from the right end. The tension in the second rope is.

.

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Text Solution

W

2

W

4

W

3

2W

3

Answer :

D

Solution :

T1+T2=W

Taking moment about A.[C.W.⊕)

W×

L

2

-T2×

3L

4

=0

T2=

2W

3

.

.