Mechanics 1

[nanso]

Can someone with a good heart please help me understand how to find resolving forces. Was skipping 2 many classes!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :?: :?: :?: :?

 

[khizar]

Resolving forces is easy bro
1,to resolve u should be knowing the angle between the horizontal and the force applied .
2, resolve it by simply making the opposite side of angle.e.g force sinx where f is force and x is the opposite angle,THIS IS UR HORIZONTAL COMPONENT.
3,THE VERTICAL COMPONENT CAN BE FOUND SIMILARLY ,simply the side adjacent to ur angle is going to be ,force cosx .
4,subtract all vertical components to get a final resultant component ,subtract all horizontal components to get a final horizontal component.
5,Resultant is found by pythogras theoram ,because u have vertical and horizontal forces like in a right angle triangle and ur hypotonese is going to be ur resultant force.

good luck.

 

[Zohaib Sherazi]

Any force that acts at angle has two components: 'the horizontal component' and 'the vertical component'. At AS-Level mechanics the following knowledge will be ample. But the only way to master it is to practice. At this stage, preferably with past papers.

 

[princesszahra]

When a body is in equilibrium, we can resolve all the forces in any direction, and in each direction we find there are no net forces. If a body has no forces acting on it, it may still move, but it will not accelerate, because by Newton's second law of motion, F=ma, if F=0, a=0. In this situation the body will move with constant velocity, or constant speed in a straight line. A body in equilibrium though, does not move at all.

We can use the equilibrium condition, that all the forces in any direction add up to zero, to write down simultaneous equations and solve them for the forces we need to find.

Example:



Resolving vertically for the 2Kg particle:

(1)

Resolving horizontally

(2)

gives

Then from

 

[Refining Heaven DV]

thanks