Gravity
It probably is because of the engine the pulls the coaster to the top
Centripetal force is the force that keeps you in your seat in the rollercoaster. It is the force that pulls toward the center of a circle when anything is in curved motion.
When there is that force that pulls downward. Example, when you climb a mountain. You will fell that there is that gravity pulling downward.
The force of gravity always pulls downward on objects. It is a natural phenomenon by which all objects with mass are brought towards one another.
gravity
Newton's second law (Force equals mass times acceleration, F = ma) deals with acceleration so it "takes effect" every time that the roller coaster speeds up, slows down or turns (horizontally or vertically).Basically Newton's second law just says that the acceleration of an object is directly proportional to the net force applied to the object and inversely proportional to the mass of the object. Or, in other words, the harder you push the faster it speeds up and the bigger it is the slower it speeds up (or slows down - deceleration is an acceleration).This means that in your roller coaster example, the object is the roller coaster and the force can be: The motors that start the coaster and lift it up hills. The brakes that slow it down. Gravity which pulls it down the hills. The rails and wheels which cause the roller coaster to turn around bends, etc. At each of these points, Newton's second law is at play, determining how much acceleration will result from the force applied to the roller coaster's mass.
Capillary action
The downward force on water is due to gravity, which pulls the water downward towards the Earth's center. This force is known as the weight of the water and is determined by the mass of the water and the acceleration due to gravity.
A roller coaster can accelerate by using gravity, propulsion systems, or magnetic forces. Gravity pulls the coaster down slopes, propulsion systems like motors or launch systems provide additional speed, and magnetic forces can propel the coaster forward using magnetic fields.
Well, to understand what a roller coaster does you will need to understand what a roller coaster is. A roller coaster is a small vehicle that runs along a fixed track. What a roller coaster does is move along that fixed track at very high speeds, and many people find this very thrilling And if your wondering how a roller coaster works Well, there are 2 types of roller coaster, most commonly the Chain Lift, The chain lift works by hooks on the bottom of the roller coaster car that hook on to a roller chain (the type of chain you would find on a bicycle) and the chain pulls you all the way to the top of the big hill, This is the part where you hear all the clicking. As you start going down the big hill the hooks simply slide out of the chain and gravity starts to take over, but the roller coaster can stay moving because of Kinetic energy and Potential energy. So the 3 things that are very important to a Roller Coaster are Kinetic energy, Potential energy, and gravity. A roller coaster works sort of like rolling a ball down a hill. For info on the launched roller coaster check out the related links.
Capillary actioncapillary action. - apex
Gravity is the force that pulls everything downward, causing rain and soil to run down a slope. This gravitational force is responsible for the movement of water and soil on Earth's surface.