A block of mass 0.5 kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 25 N/m. The other end of the is attached to a wall, and is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x = 0 . The block is then pulled to x = 0.3 m and released from rest so that the block-spring system oscillates between x = - 0.3m and x = 0.3m What is the magnitude of the acceleration of the block and the direction of the net force exerted on the block when it is located at x = 0.3m
Magnitude of Acceleration
Direction of Net force
a. 15m / (s ^ 2)
positive
b. 15m / (s ^ 2)
negative
c. 0m / (s ^ 2)
positive
d. 0m / (s ^ 2)
negative