Question

Какое различие между весом тела и силой тяжести к земле если учесть суточное вращение земли??

Answer 1

Вес тела есть сила, с которой груз давит на опору.
Сила тяжести есть сила, с которой планета притягивает груз.

Сила тяжести зависит только от гравитации планеты и массы груза.
Вес зависит ещё и от ускорения опоры. Таким образом, в общем случае вес может быть больше или меньше силы тяжести.

Поскольку суточное вращение планеты вызывает ускорение опоры (поверхности планеты в нашем случае), в общем случае вес будет меньше, чем сила тяжести. На экваторе, где центростремительное ускорение опоры максимально, разница между весом и силой тяжести будет максимальна. На полюсе вес будет равен силе тяжести.

Answer 2

Какокй класс? скажи.помогу чем смогу))))

Answer 3

Difference between Weight and Gravity Force, Considering Earth's Rotation

Weight and gravity force are related but distinct concepts. Weight refers to the force exerted on an object due to gravity, while gravity force is the force of attraction between two objects with mass. When considering the Earth's rotation, there are a few factors to keep in mind.

Weight: Weight is the force exerted on an object due to the gravitational pull of the Earth. It is directly proportional to the mass of the object and the acceleration due to gravity. The formula for weight is:

Weight = mass x acceleration due to gravity

The acceleration due to gravity is approximately 9.8 m/s^2 on the surface of the Earth. So, the weight of an object can be calculated by multiplying its mass by 9.8 m/s^2.

Gravity Force: Gravity force is the force of attraction between two objects with mass. In the case of an object on the surface of the Earth, the gravity force is the force exerted by the Earth on the object. It is responsible for the weight of the object.

Earth's Rotation: The rotation of the Earth affects the weight and gravity force in a couple of ways. Firstly, the rotation causes the Earth to be an oblate spheroid, slightly flattened at the poles and bulging at the equator. This means that the gravitational force is slightly stronger at the poles compared to the equator.

Secondly, the rotation of the Earth creates a centrifugal force that opposes the force of gravity. This centrifugal force is strongest at the equator and decreases towards the poles. As a result, objects at the equator experience a slightly reduced weight compared to objects at the poles.

However, it's important to note that the difference in weight due to the Earth's rotation is very small and generally not noticeable in everyday life. The effect is typically less than 0.5% of an object's weight.

Conclusion: In summary, weight is the force exerted on an object due to gravity, while gravity force is the force of attraction between two objects with mass. The Earth's rotation affects weight and gravity force by causing a slight variation in gravitational strength and creating a centrifugal force. However, the difference in weight due to the Earth's rotation is generally negligible in everyday life.