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Why does the force of gravity do work on a car rolling down a hill but no work when it rolls along a level part of the road?
This is a basic physics situation. Gravity is a perpendicular force to the earth's surface, or a force that is directed to the earth's center. So when a car is on perfectly level ground it will not move. But when on a hill or any considerable incline it will roll (if the car is not hindered by you pushing on the brake or the car being in park.)
Think of your car as a marble on a level tabletop. Set down the marble and it will sit where you placed it. Now as you raise one end of the table it will roll.
So when your car is in motion it will act simular. When you travel downhill, gravity will push your car to a faster speed (if you don't push the brake.) But if you are on level ground, gravity will not push you to a faster speed. Thus saying it does no work for you, when you want to continue travelling forward.
However, if a car is freely rolling on a level road (with the engine off) it will stop because gravity works with friction to slow the car down. (Now try rolling your marble across your level tabletop slowly, it probably will stop before it falls off. That is friction and gravity hindering it to a stop.)
What else can I help you with?
Did Aristotle think a force keeps a ball rolling along a smooth level on earth?
yes !
Why does the force of gravity do work on a car that rolls down a hill but no work when it rolls along a level part of the road?
on earth... as you get closer to the earths core the gravity becomes stronger.. therefore the bottom of the hill being closer to the core the gravity is stronger then the more distant top of the hill. as for the smooth road the gravity is pulling equally on all sides of the car so it cancels its self out and results in u not moving
What force pulls an aircraft toward the ground acts against the force of lift in level flight?
Gravity is the force that pulls an aircraft towards the ground, acting against the force of lift generated by the wings in level flight. Gravity pulls the aircraft downward, while lift generated by the wings counteracts this force to keep the aircraft aloft.
Is it necessary for a force to start a ball rolling on a level surface?
Yes, a force is necessary to start a ball rolling on a level surface due to the principle of inertia. The force provides the initial push needed to overcome the inertia of the stationary ball and set it in motion.
What is the force of gravity on an object know as?
The force of gravity on any object near the surface of the earth and close to sea level is 9.80 meters per second per second.
What is amount of work done by a locomotive against gravity if it is travelling in a level of plane.?
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.
Why does the water level eventually stop rising?
The water level stops rising because of the force of gravity pulling the water back down and the capacity of the container holding the water. Once the water reaches the level where the downward force of gravity equals the force of the water pressure pushing it up, it reaches equilibrium and stops rising.
Do force exist to object at rest?
There CAN be, as long as the force is being counterd by an equal and opposite force.
Why must lift be equal to the force of gravity on an airplane?
For an airplane to maintain level flight, the lift force generated by the wings must equal the force of gravity acting on the airplane. This balance ensures that the airplane neither climbs nor descends while in flight.
How can you decrease gravity?
Gravity is a constant force that is determined by the mass of two objects and the distance between them. To decrease the force of gravity, you would need to reduce the mass of one or both objects, or increase the distance between them. However, on a practical level, it is not possible to reduce the force of gravity on Earth.
When you put a book on a table pushes on the book?
Not quite sure I understand the rather vague question. But gravity ensures the book remains stationary on the level tabletop. If the table is tilted enough, the book will slide down the slope, still governed by gravity. If I gave the book a shove and it slid off the level tabletop, I would be using a physical force.
A liquid tends to seek its own?
level due to the force of gravity pulling it downwards and the particles in the liquid spreading out evenly to minimize potential energy.
