Question

ПОМОГИТЕ С ФИЗИКОЙ,ПОЖАЛУЙСТА))ХОТЯ БЫ НЕСКОЛЬКО ЗАДАЧ))ОЧЕНЬ НАДО 1)Определите вес тела массой 1 кг на экваторе и полюсе2)Определите вес мальчика на луне, если его масса 40 кг.На луне g=1,6 н/кг3)На тело массой 1 кг на луне действует сила тяжести 1,6 Н. Определите вес человека массой 50 кг на Луне4)По обледеневшей дороге лошадь везет сани с грузом общей массой 1 т. Коэффициент трения полозьев о лед 0,005. Какую силу тяги развивает лошадь?СПАСИБО

Answer 1

2) Дано:
m=40кг
g=1,6 Н/кг
Найти: Р
Решение:
Р=m*g
Р= 1,6 Н/кг*40 кг=64Н
Ответ: 64Н

3) Дано:
g=1,6 Н/кг
m= 50 кг
Найти: Р
Решение: 
Р=m*g
Р= 1,6 Н/кг*50 кг=80Н
Ответ: 80Н

Answer 2

Weight on the Equator and the Pole

The weight of an object depends on the gravitational force acting on it. The gravitational force is determined by the mass of the object and the acceleration due to gravity at that location.

1) To determine the weight of a 1 kg object on the equator and the pole, we need to know the acceleration due to gravity at those locations. The acceleration due to gravity is slightly higher at the poles compared to the equator due to the centrifugal force caused by the Earth's rotation.

At the equator, the acceleration due to gravity is approximately 9.81 m/s^2, while at the poles it is slightly higher, around 9.83 m/s^2 [[1]].

Using the formula: weight = mass x acceleration due to gravity, we can calculate the weight of the 1 kg object at each location:

- Weight on the equator: weight = 1 kg x 9.81 m/s^2 = 9.81 N - Weight at the pole: weight = 1 kg x 9.83 m/s^2 = 9.83 N

Weight on the Moon

2) To determine the weight of a 40 kg boy on the Moon, we need to know the acceleration due to gravity on the Moon. The acceleration due to gravity on the Moon is approximately 1.6 m/s^2 [[2]].

Using the formula: weight = mass x acceleration due to gravity, we can calculate the weight of the boy on the Moon:

- Weight on the Moon: weight = 40 kg x 1.6 m/s^2 = 64 N

Weight of a Person on the Moon

3) If a 1 kg object on the Moon experiences a gravitational force of 1.6 N, we can calculate the weight of a person with a mass of 50 kg on the Moon.

Using the formula: weight = mass x acceleration due to gravity, we can calculate the weight of the person on the Moon:

- Weight on the Moon: weight = 50 kg x 1.6 m/s^2 = 80 N

Traction Force of a Horse

4) To calculate the traction force developed by a horse pulling a sled with a total mass of 1 ton (1000 kg) on an icy road with a coefficient of friction of 0.005, we can use the formula: traction force = coefficient of friction x normal force.

The normal force is equal to the weight of the sled and the load. The weight is given by the formula: weight = mass x acceleration due to gravity.

- Weight of the sled and load: weight = 1000 kg x 9.81 m/s^2 = 9810 N

Now we can calculate the traction force:

- Traction force = coefficient of friction x normal force - Traction force = 0.005 x 9810 N = 49.05 N

Therefore, the horse develops a traction force of approximately 49.05 N to pull the sled with a total mass of 1 ton on the icy road.

I hope this helps! Let me know if you have any further questions.