Applications of Force Anyone who has never made

Applications of Force Anyone who has never made

Applications of Force Anyone who has never made a mistake has never tried anything new. -Albert Einstein Overview

Vector Components Force Lab Review of Common Forces (Dynamics) Free Body Diagrams Incline Planes Multi-mass Problems Static Equilibrium and Torque Atwood Machine Lab Momentum and Collisions Vector Components Motion is rarely in a straight line. We need to analyze forces and motion that follows curved lines or motion that changes direction abruptly. Motion

Equations: The Big Four Uniform motion (constant velocity) V = d t (velocity and displacement) Uniformly accelerated motion A = v1 v2 t 1. V = vi + at 2. d = (v1 + v2 )t

2 3. d = vi t + at 4. vf2 = vi2 + 2ad The Big Four Vector Addition and Subtraction In Physics 11 we solved vector problems graphically Now we will use trig and right angles in a more precise method vectors at right angles (SOHCAHTOA) rarely vectors are at right angles so we will resolve the vectors into their components

Vector Addition Step 1: resolve all vectors into their x and y components (be careful to indicate if the components are negative or positive what quadrant they are in) Step 2: calculate the total x and y components by addition Step 3: draw a summary right angle triangle and

use the pythagorean theorem to calculate the hypotenuse (resultant) and angle (direction) Vector Components and Dynamics Newtons are: 1st and 2nd laws of motion An object at rest or in uniform motion will remain at rest or in uniform motion unless acted upon by an external force F(net) = ma net force is the vector sum of all the forces acting on a body

Equilibrium - Stationary When the net forces add to zero the body is said to be at equilibrium. The force that will counter the net force to make the body stationary is called an equilibriant. Problem: calculate the equilibriant for the forces: F1 425 N [E 63 N] F2 385 N [W 15 N]

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