heart failure; a medical condition where the heart is unable to pump enough blood to meet the body's needs

the physical force that acts on a body moving in a circular path and is directed toward the center

to be completely worn out in both mind and body; to suffer from extreme fatigue or burnout

the physical force that acts on an object moving in a circle, pulling it away from the center of rotation

to waste one's efforts and mental energy; to go to great trouble to no avail