Work Energy And Power Question 280
Question: A block lying on a smooth surface with spring connected to it is pulled by an external force as shown. Initially the velocity of ends A and B of the spring are 4 m/s and 2 m/s respectively. If the energy of the spring is increasing at the rate of 20 J/sec, then the stretch in the spring is Critical Thinking
Options:
A) 1.0 cm
B) 2.0 cm
C) 10 cm
D) 2.0 cm
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Let
