The rubber cord catapult has a cross-section area 1 mm2 and total un-stretched length 10 cm. It is stretched to 12 cm and then released to project a stone of mass 5 gm. Taking Young's modulus Y of rubber as 5 × 108 N/m2, the velocity of projection will be:
(A) 20 cm/s (B) 20 m/s (C) 2 m/s (D) none of these
Dear Student ,
Here is a link which will help you to solve this question with proper explanation .
https://www.meritnation.com/ask-answer/question/a-rubber-cord-of-cross-sectional-area-5-mm2and-length-10/mechanical-properties-of-solids/8809601
Regards
Here is a link which will help you to solve this question with proper explanation .
https://www.meritnation.com/ask-answer/question/a-rubber-cord-of-cross-sectional-area-5-mm2and-length-10/mechanical-properties-of-solids/8809601
Regards