# ENGR 112 Terms

## 15 terms

### What is mechanics?

The science which describes and predicts the conditions or motion of bodies under the action of forces.

### Statics

Deals with the bodies at rest. (MARE205)

### Dynamics

Deals with the bodies in motion. (MARE206)

gasses

### Non-compressible Fluids

liquids (hydraulics)

∑F=0

F=ma

### Newton's Third Law

for every action there is an equal and opposite reaction

### Newton's Law of Gravitation

w=mg (g=9.8m/s^2)

### Particle

when all of the forces converge at one point

### Rigid Bodies

When all of the forces do not converge on a common point.

Resultant=0

### Law of Sines

sinA/a = sinB/b =sinC/c

### Law of Cosines

a² = b² + c² - 2bc cos α
b² = a² + c² - 2ac cos β
c² = a² + b² -2ab cos γ

Use when given SSS or SAS