The force that causes most of the plate movement is thermal convection, where heat from the Earth's interior causes currents of hot rising magma and cooler sinking magma to flow, moving the plates of the crust along with them. ... In ridge push and slab pull, gravity is acting on the plate to cause the movement.
Because the end of the wide garden gate is farther from the pendulum. The farther something is from the pendulum, the more distance it must travel to open.
