# Mechanics

## Kinematics, forces, vectors, motion, momentum, energy and the dynamics of objects

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### ASTM Grades Steel Bolts

ASTM steel bolts - proof and tensile strength

### Acceleration Units Converter

Convert between common units of accelerations

### Acceleration of Gravity and Newton's Second Law

Acceleration of gravity and Newton's Second Law - SI and Imperial units

### American Standard Beams - S Beam

American Standard Beams ASTM A6 - Imperial units

### American Wide Flange Beams

American Wide Flange Beams ASTM A6 in metric units

### American Wide Flange Beams - W Beam

American Wide Flange Beams ASTM A6 in English units

### Area Moment of Inertia

Area Moment of Inertia, Moment of Inertia of an Area or Second Moment of Area

### Area Moment of Inertia Converter

Conversion of Area Moment of Inertia

### Beam Support Force Calculator

Calculate beams loads and support forces

### Belts - Length and Speed of Belt

Length and speed of belt, belt gearing

### Belts - Power Transmissions and Efficiency

Calculate belts power transmissions and efficiency

### Body Forces on Inclined Planes

Determine force required to move a body up on an inclined plane

### Bollard Force

Rope friction - load and effort force in a rope

### British Universal Columns and Beams

Properties of British Universal Steel Columns and Beams

### Cable Loads

Tension in cable supporting uniformly load

### Car Acceleration

Calculating car acceleration

### Center Mass

Calculate position of center mass

### Center of Gravity

Center of gravity of some common bodies

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### Center of Gravity - Center of Buoyancy

Stability - Center of gravity and center of buoyancy

### Centripetal and Centrifugal Force and Acceleration

Centripetal and Centrifugal acceleration - force due to circular motion

### Conservation of Momentum

The momentum of a body is defined as the product of its mass and velocity

### Density, Specific Weight and Specific Gravity

An introduction and definition of density, specific weight and specific gravity - formulas with examples

### Disk Brakes

Force and torque

### Endurance Limits and Fatigue Stress

Endurance limits and fatigue stress for some steels

### Energy

Energy is the capacity to do work

### Engineering Materials

Comparing some typical properties of common engineering materials like steel, plastics, ceramics and composites

### Equilibrium

Static equilibrium is achieved when resultant force and resultant moment both equals to zero

### Fibers in Polymer Composites

Mechanical properties of fibers used in polymer composites

### Flywheel Kinetic Energy

Kinetic energy and moment of inertia of a flywheel

### Force

Force, Newton's third Law and acceleration

### Force Moving Body on a Horizontal Plane

The force acting on a body moved along a horizontal plane

### Force Ratio

Force ratio or mechanical advantage

### Formulas of Motion - Linear and Circular

Linear and angular (rotation) acceleration, velocity, speed and distance

### Gear Reducer Formulas

Output torque, speed and horsepower

### Gear Trains

A simple gear train is used to transmit rotary motion

### Gears

Gears and effort force

### HE-A Steel Beams

Properties of HE-A profile steel beams

### HE-B Steel Beams

Properties of HE-B profile steel beams

### HE-M Steel Beams

Properties of HE-M profile steel beams

### Hooke's Law

Hooke's law - force, elongation and spring constant

### Improvised Torque Wrench

Use a luggage scale to improvise a torque wrench

### Impulse and Impulsive Forces

Forces acting a very short time are called impulsive forces

### Kinetic Energy

The kinetic energy of a rigid body is the energy possessed by the body motion

### Levers

Forces with levers

### Lifting Wheels

Lifting wheels and effort force

### Mass and Weight

Weight and mass - the difference

### Metric Grades Steel Bolts

Metric steel bolts, screws and studs - proof and tensile strength

### Modulus of Rigidity

Shear Modulus or Modulus of Rigidity is the coefficient of elasticity for a shearing or torsion force

### Moment of Inertia

Moment of Inertia (Mass Moment of Inertia) depends on the mass of the object, its shape and its relative point of rotation - Radius of Gyration

### Moment of Section Conversions

Convert Moment of Section (Inertia) units

### Movement Ratio

Machines and movement ratio (velocity ratio)

### Normal Flange I Beams

Properties of normal flange I profile steel beams

### Poisson's Ratio - Metals

Some metals and their Poisson's ratio

### Poisson's ratio

When a material is stretched in one direction it tends to get thinner in the other two directions

### Potential Energy

Elevation and potential energy

### Power

Power is a measure of the rate at which work is done or energy converted

### Pulley Diameters and Speeds

Pulley laws - driver and driven - diameter and rpm

### Pulley Selection Charts

Pulley (Sheave) selection charts - motors ranging 850 - 3450 rpm

### Pulleys

Pulley basics, blocks and tackles

### Radians

The radian - a unit of angle measure - angular velocity

### Range of Projectile

Motion in two dimensions - calculate the range of a projectile like a bullet, ball ...

### Rolling Resistance

Rolling friction and rolling resistance

### Rotating Shafts and Moments

Torsional moments acting on rotating shafts

### SAE Grades Steel Bolts

SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength

### Screw Jacks

Calculate screw jacks effort force

### Section Modulus Conversions

Convert Section Modulus

### Simple Harmonic Oscillator

A simple harmonic motion

### Stiffness

Resistance to deflection

### Stress

Applied force and cross-sectional area

### Stress and Deflections in Beams

Beams and shafts - deflection and stress calculator

### Stress in Thick-Walled Tubes or Cylinders

Radial and tangential stress in thick-walled tubes or cylinders with closed ends - internal and external pressure

### Stress, Strain and Young's Modulus

Stress is force per area - strain is deformation of a solid due to stress

### Stresses in Thin-Walled Tubes or Cylinders

Hoop and longitudinal stresses thin-walled tubes or cylinders

### Tensile Modulus - Modulus of Elasticity or Young's Modulus - for some common Materials

Young's Modulus - Tensile Modulus or Modulus of Elasticity - for some common materials like steel, glass, wood ..

### Tension Increase in Ropes due to Angle

Load capacity loss in ropes, cables or lines due to angle

### Thermal Stresses

Stress due to restricting thermal expansion

### Torque - Work done and Power transmitted

Work done and power transmitted by constant torque

### Torque, or Moment - online Converter

Torque, or moment, of a force about a particular point

### Torsion of Shafts

Torsion of solid and hollow shafts - Polar Moment of Inertia of an Area

### Unified Screw Threads UNC and UNF - ANSI B1.1

UNC - Coarse series and UNF Fine series

### Universal Gravitational Law

Gravitational attraction of two objects depends upon mass of objects and the distance between them

### Vector Addition

Online vector calculator - add vectors with different magnitude and direction

### Wind Load

Wind load on a surface

### Wire Rope Slings

Sling angles - and wire rope capacities

### Work

The amount of work done is the product of the applied force and the distance