Question

Сани двигаются с места, если к ним приложить горизонтальную силу 60 Н. Какова масса саней, если сила трения составляет 0,03 их веса???? HEEEEELP! Очень срочно завтра урок...

Answer 1

Используя алгоритм решения задач на 2 закон Ньютона получим,F=μmg,
 m=F/μg=60/0,03*9,8≈200кг

Answer 2

Calculation of the Mass of the Sled

To calculate the mass of the sled, we can use the given information about the applied force and the force of friction. Let's break down the problem step by step.

1. We are given that a horizontal force of 60 N is applied to the sled. 2. The force of friction is stated to be 0.03 times the weight of the sled.

To find the mass of the sled, we need to determine the weight of the sled first. The weight of an object can be calculated using the formula:

Weight = mass × gravitational acceleration

The gravitational acceleration on Earth is approximately 9.8 m/s².

Let's assume the weight of the sled is W.

The force of friction can be calculated as:

Force of friction = coefficient of friction × weight

Given that the force of friction is 0.03 times the weight of the sled, we can write:

0.03 × W = Force of friction

Since the applied force is equal to the force of friction, we can write:

60 N = Force of friction

Now we can solve these equations to find the weight of the sled and then calculate its mass.

Let's proceed with the calculations.