Question

The rubber cord catapult has a cross-sectional area 1 mm' and total unstretched length 10.0 cm. It is stretched to
120 cm and then released to project a missile of mass 5.0 g. Taking Young's modulus for rubber as 5.0x10 Nm
the tension in the cord is -
(A) 1000 N
(B) 100 N
(C)10 N
(D) 1N​

Answer 1

answer is c

Explanation:

then missile mass is