I think that it’s false I might be wrong but I want the points
To represent in order how the animals
Answer:
Change in mechanical energy = work done by friction
so it is equal to

Explanation:
As we know that change in mechanical energy must be equal to the work done by non conservative forces only
So here when block moves down the inclined plane then the work done by friction force is given as

here we have

here we know that

so we have


Now the friction force on the block is given as



now work done by the friction is given as


The normal force is always perpendicular to the surface. So it would be straight to the left of the wall