0
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?
Wiki User
∙ 14y ago
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
Wiki User
∙ 14y ago
Gravity does work on a car rolling down a hill because it causes a displacement in the direction of the force, resulting in a change in the car's kinetic energy. On a level road, gravity only acts perpendicularly to the displacement, so no work is done since there is no change in the car's kinetic energy.
Add your answer:
Earn +20 pts
Why is a ball rolling down a hill an unblanced force?
When a ball rolls down a hill, several forces are acting on it. The force of gravity pulling the ball downward is greater than the force of friction pushing against it, causing the ball to accelerate. This imbalance between the forces of gravity and friction is why the ball rolls down the hill.
When a boulder rolls down a hillside what force most likely caused it to move?
Gravity is the force most likely responsible for causing a boulder to roll down a hillside. The force of gravity pulls objects downhill, causing them to move from higher to lower elevations.
Which force causes a wagon to speed up as it rolls down a hill friction gravity mass normal?
Gravity is the force that causes a wagon to speed up as it rolls down a hill. Gravity pulls the wagon towards the center of the Earth, causing it to accelerate downhill. Friction and normal forces act in the opposite direction but do not cause the wagon to speed up in this scenario.
What force causes a ball to roll down a ramp?
The force of gravity causes the ball to roll down the ramp. The force of gravity pulls the ball downward towards the center of the Earth, causing it to accelerate as it rolls down the ramp.
Why does a bicycle speed up as it rolls down hill?
As a bicycle rolls downhill, the force of gravity pulls it downward, converting potential energy to kinetic energy, causing it to accelerate. The increase in speed is a result of the gravitational force overcoming the resistance from friction and air resistance.
Why is a ball rolling down a hill an unblanced force?
When a ball rolls down a hill, several forces are acting on it. The force of gravity pulling the ball downward is greater than the force of friction pushing against it, causing the ball to accelerate. This imbalance between the forces of gravity and friction is why the ball rolls down the hill.
When a boulder rolls down a hillside what force most likely caused it to move?
Gravity is the force most likely responsible for causing a boulder to roll down a hillside. The force of gravity pulls objects downhill, causing them to move from higher to lower elevations.
Which force causes a wagon to speed up as it rolls down a hill friction gravity mass normal?
Gravity is the force that causes a wagon to speed up as it rolls down a hill. Gravity pulls the wagon towards the center of the Earth, causing it to accelerate downhill. Friction and normal forces act in the opposite direction but do not cause the wagon to speed up in this scenario.
What force causes a ball to roll down a ramp?
The force of gravity causes the ball to roll down the ramp. The force of gravity pulls the ball downward towards the center of the Earth, causing it to accelerate as it rolls down the ramp.
Gravity Conveyors and Industry?
Gravity converyors are mostly used in the shipping industry where the force of gravity rolls the items down the belt. These conveyors usually offer the most stable form of transport compared to others.
Why does a bicycle speed up as it rolls down hill?
As a bicycle rolls downhill, the force of gravity pulls it downward, converting potential energy to kinetic energy, causing it to accelerate. The increase in speed is a result of the gravitational force overcoming the resistance from friction and air resistance.
What force id calling a snowball to roll down a grassy hill?
The force of gravity is pulling the snowball downhill, causing it to accelerate and gain speed as it rolls. Friction between the snowball and the grassy surface also plays a role in slowing down the snowball as it rolls.
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.)
How does gravity affect a snowball rolling down a grassy hill?
Gravity pulls the snowball downward, increasing its speed as it rolls down the hill. The force of gravity also helps to overcome friction between the snowball and the grass, allowing it to continue rolling.
What force makes the pen droke onto the floor from rolling off the desk?
Gravity is the force that causes the pen to fall from the desk to the floor when it rolls off. Gravity acts as an attractive force between objects with mass, pulling the pen towards the Earth's surface.
Why do things roll downhill?
Things roll downhill because of gravity, which pulls objects toward a larger mass, such as the center of the Earth. As an object gains momentum rolling downhill, the force of gravity helps it maintain its motion and accelerate. Friction also plays a role in ensuring the object stays in contact with the surface as it rolls downhill.
What force causes a ball to roll downhill?
The force of gravity causes a ball to roll downhill. As the ball is positioned higher up the slope, gravity pulls it downward, causing it to accelerate and gain momentum as it rolls downhill. Friction may also play a role in slowing down the ball's movement.
