100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Examens ( 2 exercices ) & solution _physique1 contient ( cinématique - dynamique ) _1ère année univ_ $0.00

Exam (elaborations)

Examens ( 2 exercices ) & solution _physique1 contient ( cinématique - dynamique ) _1ère année univ_

 3 views  0 purchase
  • Course
  • Institution

Examens ( 2 exercices ) & solution _physique1 contient ( cinématique - dynamique ) _1ère année univ_ Tags : examen national svt 2 bac pc biof 2017,exercices 2 bac,examen national,examen,examen national svt 2016 session normal 2 bac svt,exercices,exercice,examen national svt 2017 session nor...

[Show more]

Preview 2 out of 8  pages

  • April 5, 2024
  • 8
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers
avatar-seller
hange E hange E
XC di XC di
F- t F- t
PD




PD
or




or
!




!
W




W
O




O
N




N
Y




Y
U




U
B




B
to




to
ww




ww
om
k




k
lic




lic
C




C
.c
w




w
tr re tr re
.




.
ac ac
k e r- s o ft w a k e r- s o ft w a




Cycle Préparatoire 1ère année Matière : PHYSIQUE 1

Responsable de matière : M. Chekerker

Solution Epreuve de Physique 1

Date : …/01/2022, (Durée : 60mn)

Exercice 1.(𝟏𝟎 𝒑𝒕𝒔)

1- Le vecteur vitesse angulaire est :
𝑝𝑡

⃗⃗⃗ 𝟏 (𝑹𝟏 /𝑹) = 𝝎𝟏 𝒌
𝝎

- Etant donné que le repère 𝑹𝟏 est en translation par rapport à
𝑹, La vitesse relative de 𝑴 : 𝑝𝑡

⃗⃗⃗⃗⃗⃗⃗⃗⃗
𝒅𝑶 𝟏𝑴 𝒅(𝑨𝒖
⃗⃗ 𝟏 ) ⃗⃗ 𝟏
𝒅𝒖
⃗⃗ 𝒓 =
𝑽 = =𝑨 = 𝑨𝝋̇⃗𝒖
⃗ 𝟐 = 𝑨𝝎𝟏 ⃗𝒖
⃗𝟐
𝒅𝒕 𝒅𝒕 𝒅𝒕

- La vitesse d’entrainement :
𝑝𝑡
⃗⃗⃗⃗⃗⃗⃗⃗𝟏 𝒅(𝒂𝒕𝒌
𝒅𝑶𝑶 ⃗)
⃗𝑽
⃗𝒆= = ⃗
= 𝒂𝒌
𝒅𝒕 𝒅𝒕

2- La vitesse absolue. D’après la loi de composition des vitesses
dans le cas de repère 𝑹′ en translation par rapport à 𝑹 est
donnée par :

⃗⃗ 𝒂 = 𝑽
𝑽 ⃗⃗ 𝒆 + 𝑽
⃗⃗ 𝒓 = 𝑨𝝎𝟏 𝒖 ⃗
⃗⃗ 𝟐 + 𝒂𝒌
𝑝𝑡

𝑝𝑡

, hange E hange E
XC di XC di
F- t F- t
PD




PD
or




or
!




!
W




W
O




O
N




N
Y




Y
U




U
B




B
to




to
ww




ww
om
k




k
lic




lic
𝑝𝑡
C




C
.c
w




w
tr re tr re
.




.
ac ac
k e r- s o ft w a k e r- s o ft w a



3- L’accélération relative : 𝑝𝑡

⃗⃗ 𝒓 𝒅(𝑨𝝎𝟏 𝒖
𝒅𝑽 ⃗⃗ 𝟐 ) ⃗⃗ 𝟐
𝒅𝒖
⃗𝒓=
𝒂 = = 𝑨𝝎𝟏 = −𝑨𝝎𝟐𝟏 𝒖
⃗⃗ 𝟏
𝒅𝒕 𝒅𝒕 𝒅𝒕

4- L’accélération d’entrainement :
𝑝𝑡
𝟐 ⃗⃗⃗⃗⃗⃗
𝒅 𝑶𝑶𝟏 𝒅 (𝒂𝒕𝒌⃗)𝟐
⃗𝒆=
𝒂 = ⃗.
=𝟎
𝒅𝒕𝟐 𝒅𝒕𝟐

5- La loi de composition des accélérations donne l’accélération
absolue : 𝑝𝑡

𝑝𝑡 ⃗𝒂=𝒂
𝒂 ⃗ 𝒆+𝒂
⃗𝒓= −𝑨𝝎𝟐𝟏 𝒖
⃗⃗ 𝟏

C’est une accélération centripète.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller aminall000. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $0.00. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

60281 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
Free
  • (0)