An ideal spring of spring constant k, is suspended from the ceiling of a room and a block of mass m is fastened to its lower end. If the block is released when the spring is un-stretched, then the maximum extension in the spring is:
A. 4\(\frac { mg }{ k }\)
B. \(\frac { mg }{ k }\)
C. 2\(\frac { mg }{ k }\)
D. \(\frac { mg }{ 2k }\)
Answer:C
An ideal spring of spring constant k, is suspended from the ceiling of a room and a block of mass m is fastened to its lower end. If the block is released when the spring is un-stretched, then the maximum extension in the spring is:
A. 4\(\frac { mg }{ k }\) B. \(\frac { mg }{ k }\) C. 2\(\frac { mg }{ k }\) D. \(\frac { mg }{ 2k }\)