Two equal masses are attached to the two ends of a spring of spring constant x. The masses are pulled out symmetrically to stretch the spring by x over its natural length. The W.D by the spring on each mass _______.
A. 1/2 kx²
B. – 1/2 kx²
C. 1/4 kx²
D. – 1/4 kx²
Answer:D
Two equal masses are attached to the two ends of a spring of spring constant x. The masses are pulled out symmetrically to stretch the spring by x over its natural length. The W.D by the spring on each mass _______.
A. 1/2 kx² B. – 1/2 kx² C. 1/4 kx² D. – 1/4 kx²