A 1.9 kg box moves back and forth on a horizontal frictionless surface between two different springs, as shown in the accompanying figure. (Figure 1) The box is initially pressed against the stronger spring, compressing it 3.1 cm, and then is released from rest. a)By how much will the box compress the weaker spring? b)What is the maximum speed the box will reach?

A 10 cm long spring is attached to the ceiling. When a 2.0 kg mass is hung from it, the spring stretches to a length of 15 cm. What is the spring constant k? How long is the spring when a 3.8 kg mass is suspended from it?

A shopper weighs 2.00 kg of apples on a supermarket scale whose spring obeys Hooke's law and notes that the spring stretches a distance of 2.50 cm. (a) What will the spring's extension be if 6.00 kg of oranges are weighed instead? cm(b) What is the total amount of work that the shopper must do to stretch this spring a total distance of 6.00 cm beyond its relaxed position? J

Doing some physics homework and am kind of stumped here!