Question

Ящик массой 20 кг тянут по полу с силой 15Н. Найдите ускорение, если сила сопротивления движения равна 5Н?

Answer 1

Результирующая сила:
                                      Fp = F - Fтр = 15 - 5 = 10 (Н)
Ускорение тела:
                                a = F/m = 10:20 = 0,5 (Н/кг) = 0,5 (м/с²)

Ответ: 0,5 Н/кг

Answer 2

Calculation of Acceleration

To find the acceleration of the box being pulled along the floor with a force of 15N and a resistance force of 5N, we can use Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

The formula for acceleration is:

a = F_net / m

Where: - a is the acceleration - F_net is the net force acting on the object - m is the mass of the object

Given: - Mass of the box (m) = 20 kg - Force applied (F) = 15N - Resistance force (F_resistance) = 5N

We can calculate the net force (F_net) by subtracting the resistance force from the applied force:

F_net = F - F_resistance

Substituting the given values:

F_net = 15N - 5N = 10N

Now, we can substitute the values of F_net and m into the formula for acceleration:

a = F_net / m = 10N / 20kg = 0.5 m/s^2

Therefore, the acceleration of the box is 0.5 m/s^2.