Предмет: Физика, автор: arinakorneeva66

помогите решить задачу по технической механике, расчёт на прочность при изгибе

Приложения:

Ответы

Автор ответа: maxibon0303
1

Ответ:

Объяснение:

уравнение равновесия моментов сил относительно т. В

∑ M(B) = 0

q (a+b) ((a+b)/2+c) - F2 *c - Mb = 0

Mb = q (a+b) ((a+b)/2+c) - F2 *c =

= 20 (0.5+0.5) ((0.5+0.5)/2+0.5) - 10 *0.5 = 15 кН м

уравнение проекций сил на ось OY

∑ Fx= 0

- q (a+b) + F2 + Rb = 0

Rb = q (a+b) - F2 =

= 20 (0.5+0.5) - 10 = 10 кН

Проверка

уравнение равновесия моментов сил относительно т. A

∑ M(A) = - q (a+b) a + F2 *(a+b) + Rb (a+b+c)- Mb  =

= - 20 (0.5+0.5) 0.5 + 10 *(0.5+0.5) + 10* 3*0.5 - 15 = 0

реакции определены правильно

1)

построение эпюры Q

Q1 = 0

Q2 =

Q3 =

Q4 = 10 кН

построение эпюры M

M1 = 0

M2 =

M3 =

M4 = 15 кН м

2)

проверка условия прочности

σ < [σ]

пиши решу твое задание

без пробелов

maxibon0303 @ yan dex.ru

Похожие вопросы
Предмет: Английский язык, автор: Аноним
She's very interested in … nature, especially animals and birds.
A) the
B) -
C) an
D) a
3. Choose the correct preposition.
We're all anxious … an end to this misunderstanding.
A) with
B) at
C) from
D) for
4. Choose the correct preposition.
He tripped … the cat and fell downstairs.
A) about
B) with
C) over
D) in
5. Complete the sentence.
If I … to university I would have studied medicine.
A) have gone
B) went
C) was going
D) had gone
6. Choose the correct option.
I didn't like him - he … continually … money.
A) borrowed
B) had been borrowed
C) have … borrowed
D) was … borrowing
7. Choose the sentence without mistakes.
A) Everybody were late.
B) Couldn't you help me, please?
C) It's getting winter.
D) I'll try to find out when it starts.
8. Choose the correct form.
If she asks what I'm doing in her flat, I'll say I … the gas.
A) have been checking
B) check
C) am checking
D) have checked
9. Choose the correct option.
This engine hardly uses … petrol.
A) some
B) any
C) no
D) a
10. Choose the correct option.
After her husband died, she was all ….
A) lone
B) lonesome
C) lonely
D) alone
11. Insert a suitable idiom.
The children call Vera … because she is easily frightened.
A) a cat nap
B) let the cat out of the bag
C) curiosity killed the cat
D) a scaredy-cat
12. Hufflepuff is one of the four Houses of Hogwarts School of Witchcraft and
Wizardry. What animal is the emblem of the Hufflepuff House?
A) badger
B) snake
C) raven
D) lion
13. Complete the sentence.
In 1949 Big Ben’s clock slowed down by 5 minutes when a flock of … landed on the minute hand!
A) ravens
B) starlings
C) magpies
D) sparrows
14. Answer the question.
What country gave the USA the Statue of Liberty?
A) Germany
B) Spain
C) Italy
D) France
15. Answer the question.
What is the title of the book about a young boy growing up in the antebellum South on the Mississippi River in the fictional town of St. Petersburg, Missouri?
A) «Frankenstein»
B) «Treasure Island»
C) «The Adventures of Tom Sawyer»
D) «The Chronicles of Narnia»
Предмет: Русский язык, автор: грусть2