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A jogger who bounces up and down while running is said to waste more energy than a jogger with a smooth stride whose center of gravity remains at about a constant elevation Why?
Wiki User
∙ 14y ago
For each little 'bounce', the runner has to expend the energy to raise his weight by those few inches ... which gravity immediately reverses as it pulls him down to his original elevation. None of this adds anything to his forward progress. So in the course of the same forward distance, the bouncer expends more total energy than the guy who keeps his center of mass at a constant elevation.
Wiki User
∙ 14y ago
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A spring scale measures weight. It is dependent on the gravity, and so one's weight in space, or on the moon would be different based on the spring scale. A balance measures mass, and since the standards in a balance are the same no matter what the gravity is, then the mass remains constant. However, for all practical purposes, the gravity on earth is constant so the weight and mass of the objects would be the same.
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remains constant
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No, mass remains constant.
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Yes because of gravity
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the weight reduces due to change in gravity but mass remains constant
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Weight = mass x acceleration due to gravity As acceleration due to gravity remains constant at a given place, weight becomes proportional to the mass
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Yes, an object's weight can change even if its mass remains constant. This happens if it moves to a place with different gravity. An object on the Moon would weigh only one sixth of what it did on Earth.
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The entropy does not remains constant if the system is not isolated.
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The acceleration due to gravity remains constant, regardless of incline. The fact that it is on an incline does not change the fact that it will remain constant, it will only change the component of that acceleration being applied to the ball.
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No. Except for insignificant effects related to Special Relativity, the mass remains constant. The weight, on the other hand, changes. Weight is calcualted as: weight = mass x gravity Where "gravity" is the acceleration due to gravity.
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The country with the lowest gravity is not easily identifiable because gravity is a constant force that remains relatively consistent around the world. However, variations in gravity can occur due to factors such as altitude and geology.
Explain the effect that gravity has on the velocity of falling objects?
The force of gravity causes the falling object's velocity to grow in magnitude by 9.8 meters per second every second, while its direction remains constant.
