What is the difference between a bone and a muscle?

They are different because

Explanation:

Muscles: produce heat for the body to sustain temperature, helps with balance, posture and muscle tone - partial contraction of muscles taking turns to hold the neck up for example. 3 types of muscle, being; cardiac (found in the heart as a thick, branched arrangement of muscle cells), skeletal (the ones you can flex and aid movement) and smooth (found in the uterus and alimentary canal, aiding internal movement). So the main purpose is movement, heat and balance.

Bones: leverage movement, protect vital internal organs, provide a framework for the body, produce red blood cells from red bone marrow, store minerals and fat in yellow bone marrow, in the middle of the bone, known as the diaphysis. The last one is also that they allow our joints to connect provide a foundation for tendons to attach to. There are also many types of joints, but that’s for another time.

Hope this helps :)

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.