Question

Решите пожалуйста очень срочно!!!!!! Поезд массой 500т трогаясь с места,через 25 сек преобретает скорость 5м/с.Определите силу тяги

Answer 1

Найдем ускорение:
a=v/t=5/25=0.2
Fравнодействующая направлена в сторону силы тяги
Fравнодействующая=m*a=500000*0.2=100000Н
Fравнодействующая=Fтяги=100000Н

Answer 2

Calculation of the Force of Traction

To determine the force of traction, we can use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the train, and the force of traction is the force required to accelerate the train.

Given: - Mass of the train (m) = 500,000 kg - Time taken to reach the velocity (t) = 25 s - Final velocity (v) = 5 m/s

To find the acceleration (a), we can use the formula:

a = (v - u) / t

where: - u is the initial velocity, which is 0 m/s since the train starts from rest.

Substituting the given values:

a = (5 m/s - 0 m/s) / 25 s = 0.2 m/s^2

Now, we can calculate the force of traction (F) using the formula:

F = m * a

Substituting the given values:

F = 500,000 kg * 0.2 m/s^2 = 100,000 N

Therefore, the force of traction required to accelerate the train is 100,000 Newtons.

Please note that the above calculation assumes that there are no other forces acting on the train, such as friction or air resistance.