Yes, peristalsis will work against gravity.
Gravity does not directly help peristalsis, which is the involuntary contraction and relaxation of muscles that helps move food through the digestive tract. Peristalsis is controlled by the enteric nervous system in the gastrointestinal tract. Gravity can slightly assist in moving food down the esophagus when swallowing, but peristalsis is the main force that propels food through the digestive system.
All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it. This work is equal to force x height, if force is in Newtons and height in meters, the work is in units of Joules.
Walking across the room is not work against gravity.Walking up the stairs is work against gravity.Walking down the stairs is work with gravity.
The climber must work against gravity as he climbs. Gravity is pulling him downward and he needs to exert force to push himself upward against it.
Two forces that can work against gravity are lift (such as in the case of a plane generating lift to counteract gravity) and buoyancy (such as in the case of a buoyant object in water being pushed upwards).
friction and gravity
The work done against gravity is calculated using the formula: work = force x distance. In this case, the force against gravity is the weight of the box, which is mass x gravity. So, work = (16 kg x 9.8 m/s^2) x 0.50 m = 78.4 J.
"Actually the muscles around your digestive tract help move food through it." The rhythmic movement of these muscles is technically called peristalsis.
In human beings, gravity.
If the locomotive is traveling on a level plane, the amount of work done against gravity is zero. This is because the force of gravity is acting perpendicular to the direction of motion. Work is only done when the force and displacement are in the same direction.
No work is done against gravity when a body is moved horizontally along a frictionless surface because the force of gravity acts perpendicular to the direction of motion. Work is only done when a force is exerted in the direction of motion.
When you go against gravity, such as jumping up in the air or climbing stairs, you are using muscular force to overcome the force of gravity pulling you down. Your muscles work to counteract gravity and help you move in the opposite direction.