A 280 g wood block is firmly attached to a very light horizontal spring, as shown in the figure . The block can slide along a table where the coefficient of friction is 0.30. A force of 22 N compresses the spring 18 cm. If the spring is released from this position, how far beyond its equilibrium position will it stretch at its first maximum extension?

Answer 1

Figure the stored energy at the beginning (compressed 18 cm).

Figure the friction energy it loses as it slides x+18 cm (mg*mu*(x+.18)

final stored energy= 1/2 k x^2 solve for x.

base equation: final stored energy= initial stored energy + friction energy lost.

Answer 2

30

Answer 3

it must be = 0.17