The length of an unstretched elastic string is 2a. It is connected to two pegs A and B kept at a distance 2a. To the mid-point C an elastic string of length a is attached. The other end D of this string is pulled at right angles to AB until C is displaced through a distance equal to a/10. Calculate the shift of D assuming the strings have the same moduli of elasticity and the same cross sectional area.

The length of an unstretched elastic string is 2a. It is connected to

1.	The length of an unstretched elastic string is 2a. It is connected to two pegs A and B kept at a distance 2a. To the mid-point C an elastic string of length a is attached. The other end D of this string is pulled at right angles to AB until C is displaced through a distance equal to a/10. Calculate the shift of D assuming the strings have the same moduli of elasticity and the same cross sectional area.
Answer» ANSWER :0.101 a