shown in the The two pulley arrangements figure are

Last updated: 6/14/2023

shown in the The two pulley arrangements figure are identical The mass of the rope is negligible In a the mass m is lifted up by attaching a mass 2m to the other end of the rope In b m is lifted up by pulling the order end of the rope with a constant downward force of 2mg The ratio of acceleration in two cases will be a m 2m m 2mg