A spring of negligible mass having a force constant of 10 Nm-1 is compressed by a force to a distance of 4 cm. A block of mass 900 g is free to leave the top of the spring. If the spring is released, the speed of the block is
A. 11.3 ms-1
B. 13.3 × 101 ms-1
C. 13.3 × 10-2 ms-1
D. 13.3 × 10-3 ms-1
Answer:C
A spring of negligible mass having a force constant of 10 Nm-1 is compressed by a force to a distance of 4 cm. A block of mass 900 g is free to leave the top of the spring. If the spring is released, the speed of the block is
A. 11.3 ms-1 B. 13.3 × 101 ms-1 C. 13.3 × 10-2 ms-1 D. 13.3 × 10-3 ms-1