Question

A spring and block are assembled as shown below. When the block is pulled
to the position x = +4.0 cm must apply a force of 360 N to keep it in that position.
We push the block to the position x = +11 cm and release. What is the work done by
spring on the block as it moves to xi = 5.00 cm for:
a) x = 3.00 cm + b) x = - 3.00 cm c) x = -5.00 cm d) x = -9.00 cm

Answer 1

A spring and block are assembled as shown below. When the block is pulled
to the position x = +4.0 cm must apply a force of 360 N to keep it in that position.
We push the block to the position x = +11 cm and release. What is the work done by
spring on the block as it moves to xi = 5.00 cm for:
a) x = 3.00 cm + b) x = - 3.00 cm c) x = -5.00 cm d) x = -9.00 cm