4ESO FQ English 2018-2019. Unit 3 DYNAMICS (FORCES). Article 5.
DYNAMICS.
- You already know what Dynamic is from what you studied before about forces lesson. But you have anyway a reminder here :
+ Dynamics, branch of physical science and subdivision of mechanics that is concerned with the motion of material objects in relation to the physical factors that affect them: force, mass, momentum, energy. Newtons laws of motion are directly related to Dynamics and, even more, they explain it.
- MASS AND WEIGHT :
* Activity 1.32 : Gravity and weight. ( Monday )
* These are the questions to answer looking up the following links :
When you finish answering all the questions. ( 20 points ).
+ Do this PROBLEM about finding Jupiters gravity from knowing a persons mass and his/her weight.
> When attraction between Earth and an object is considered, Newtons gravitation equation becomes like this :
+ NEWTONS GRAVITATION EQUATION PROBLEMS. Just try them !!
+ Here you have a problem about Gravitational attraction force ( wording pic and then a solution pic ) in
which one you have to solve for another variable different from the attraction force F.
+ At the following website you can check all whatever you want about GRAVITATION !! ( Keplers laws included ).
+ VIDEO 1 easy explained the 3 Keplers laws.
+ VIDEO 2 easy explained the 3 Keplers laws.
+ VIDEO 3 easy explained the 3 Keplers laws.
+ VIDEO 4 easy explained the 3 Keplers laws.
+ VIDEO 5 even one more video explaining Keplers laws.
+ Right HERE you can find a page with an easy way to learn and understand Keplers laws.
+ Lets try now the exercises 1 and 3 from the following website about Keplers laws.
+ Lets try a few more problems about solving and using Keples laws.
* Activity 1.34 : Reviewing Mass and gravity. ( Monday )
1.34.a Pics of earth, gravity and weight to make the poster. ( 10 points ).
1.34.b On the poster you must write a weight and gravitys description. ( 5 points ).
1.34.c Fun way to review forces. ( 5 points ).
Copy this outline on a sheet in order to review some of the forces studied.
LINK 2 ( Weight , mass , gravity ).
* Activity 1.33 : Gravity and weight test. ( Tuesday )
GRAVITY , MASS AND WEIGHT TEST. ( 10 points ).
- Gravity cards for a talking activity :
- INCLINED PLANE ( advanced extra class ) :
- An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load. The inclined plane is one of the six classical simple machines defined by Renaissance scientists.
- Now it is time for you to achieve an exercise like that. Just try doing the
following exercise :
+ Wording exercise 1 :
Find the components of a force F whose magnitude is 20 N and its direction is
defined by angle θ = 30° made by the force and the positive x-axis as shown below.
+ Wording exercise 2 :
Find the components of a force whose magnitude is 50 N and its direction is given by angle α = 25° made with the negative y-axis as shown in the diagram.
+ You can find the solutions and explanations about the way to achieve
them HERE.
+ HERE , You can find more exercises of the same kind.
