Meltedtoadguygo Meltedtoadguygo Physics Answered A marble is attached to a compressed horizontal spring and is then released. Which equation correctly shows the conservation of mechanical energy for this system? (1 point)a. mgh=kx^2b. mgh=(1/2)kx^2c. (1/2)mv^2=kx^2d. (1/2)mv^2=(1/2)kx^2