Question

две книги с одной и той же массой 400 г положенные друг на друга поднимают вертикально вверх с ускорением 5 минут в секунду в квадрате С какой силой давит при этом на нижнюю книгу та книга которая находится сверху А если их отпускает вниз таким же ускорением ​

Answer 1

Ответ:на фото показано

Объяснение:

сорри за почерк)))

Answer 2

Ответ:Дано:

m=0,4 кг

а=5 м\с2    P- ?

Объяснение:так как ускорение направлено вверх P=m(g+a)=0.4*(10+5)=6 Н

Answer 3

Calculation of the Force on the Bottom Book

To calculate the force exerted on the bottom book when two books with the same mass of 400 g are stacked on top of each other and lifted vertically upwards with an acceleration of 5 m/s^2, we can use Newton's second law of motion.

Newton's second law states that the force (F) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a). Mathematically, it can be expressed as:

F = m * a

In this case, the mass of each book is 400 g, which is equal to 0.4 kg. The acceleration is given as 5 m/s^2.

Substituting the values into the equation, we get:

F = 0.4 kg * 5 m/s^2

Calculating the product, we find:

F = 2 N

Therefore, the force exerted on the bottom book is 2 Newtons when the two books are lifted vertically upwards with an acceleration of 5 m/s^2.

Calculation of the Force on the Bottom Book when Released Downwards

If the two books are released downwards with the same acceleration of 5 m/s^2, the force exerted on the bottom book will be the same as before, but in the opposite direction. According to Newton's third law of motion, for every action, there is an equal and opposite reaction.

Therefore, the force exerted on the bottom book when the two books are released downwards with an acceleration of 5 m/s^2 will also be 2 Newtons, but in the opposite direction.

Please note that the force calculated here assumes ideal conditions and neglects factors such as air resistance and friction between the books.

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