elastic potential energy stored in the spring

A spring is initially stretched a distance of 0.2m from its natural length.   Its elastic potential energy increases from zero to a final value of 25J.  The force constant, k of the spring is

A spring of spring constant k = 12.3 N/m is compressed from it's equilibrium position by 28.1 cm. How much energy is stored in the elastic potential energy of the spring?

A spring of negligible mass has force constant k = 1600 N/m. How far must the spring be compressed for 3.20 j of potential energy to be stored in it? 7) %3D a) b) The spring is placed vertically with one end on the floor. A 1.0-kg book is the droped from a height of 0.80 m above the top of the spring. Find the maximum distance the spring will be compressed. 1.0 kg h = 0.8 m

As a 1.5×104 kgkg jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. The cable is attached to a spring with spring constant 6.3×104 N/mN/m . The spring stretches 33 mm  to stop the plane   What is the elastic potential energy of the spring when the plane comes to a stop?

Determine the percent increase in the potential energy of the spring if it is stretched from 4.00 cm to 8.00 cm?

QUESTION 9 When a spring is compressed or stretched, the elastic potential energy (U=1/2kx²) of the spring: Oa. Stays constant Ob. Decreases Oc Increases Od. Either positive or negative

A spring has a natural length of 13.6 cm and a spring constant of 230 N/m. How much elastic potential energy will the spring have when it is stretched by 5.12 cm?