Physics

To find the speed of the block at the bottom of the incline, we can use the principle of conservation of mechanical energy. The total mechanical energy (kinetic + potential) remains constant throughout the motion, as there is no friction.

 

Initial Energy at the Top

At the top of the incline, the block has only potential energy (PE) since it is at rest.

Where:

(mass of the block)

(acceleration due to gravity)

(height of the incline)

 

At the top, the kinetic energy (KE) is zero since the block starts from rest:

 

So, the total initial energy is: