Q.7
Three spring balances are attached to the
ring as shown in the figure. There is an
angle of 90° between the balance A and
balance B. There is a reading of 5N on balance A and 12 N on the balance B. Please find reading on Balance C and the angle theta.
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Three springs balances are attached to the string as shown in figure. there is an angle of 90
0
between the balances A and balance B. there is reading of 5 N on balance A and 12 N on the balance B
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We resolve spring "C" into its " x and y " components
taking the force in spring C as T
now equating all x components
Tsin∅=12 --------1
Tcos∅=5 --------2
now dividing 1 by 2
tan∅= 12/5
∅= tan-¹(12/5)
∅=66.38°
Now to find the force!!
T= ✓(12²+5²) = 13N
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