# Mechanics

## Forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more

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### 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

Dimensions of American Wide Flange Beams ASTM A6 - Imperial 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

Convert Area Moment of Inertia units

### Beam Support Forces Calculator

Calculate beam loads and support forces

### Belt Transmissions - Length and Speed of Belts

Length and speed of belt and belt gearing

### Belts - Power Transmissions and Efficiency

Calculate belts power transmissions and efficiency

### Body Force acting on Inclined Planes

Force required to move bodies up inclined planes

### Bollard Force

Bollard rope friction - the load and effort force in the rope

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### British Universal Columns and Beams

Properties of British Universal Steel Columns and Beams

### Cable Loads

Force and tension in cables supporting uniformly loads

### Car Acceleration

Calculating car acceleration

### Center Mass

Calculate center mass position

### Center of Gravity

Some common bodies and their center of gravity

### Center of Gravity - Center of Buoyancy

Stability - center of gravity and center of buoyancy

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### Centripetal and Centrifugal Force - 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 to density, specific weight and specific gravity - formulas with examples

### Disk Brakes - Force and Torque

Force and torque by activated disk brakes

### Energy

Energy is the capacity to do work

### Engineering Materials

Typical properties of engineering materials like steel, plastics, ceramics and composites

### Equilibrium

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

### Fibre-reinforced Polymer Composites

Mechanical properties of fibers used to reinforce polymer composites

### Flywheel Kinetic Energy

Flywheel kinetic energy and moment of inertia

### Force

Force - Newton's third law and acceleration

### Force - Moving Body on a Horizontal Plane

The force acting on a body moved in a horizontal plane

### Force Ratio

Force ratio or mechanical advantage

### Force and Tension in a Rope due to Angle

Reduced load capacity in ropes, cables or lines - due to angle

### Formulas of Motion - Linear and Circular

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

### Gear Reducing Formulas

Output torque, speed and horsepower with gears

### Gear Trains - Bicycle Gear Calculator

Gear train transmission - bicycle gearing

### Gears

Gears and effort force

### HE-A Steel Beams

Properties of HE-A profiled steel beams

### HE-B Steel Beams

Properties of HE-B profiled steel beams

### HE-M Steel Beams

Properties of HE-M profile steel beams

### Harmonic Oscillator

A simple harmonic oscillator

### Hooke's Law

Hooke's law - force, elongation and spring constant

### Improvised Torque Wrench

An improvised torque wrench with a luggage scale

### Impulse and Impulse Force

Forces acting a very short time are called impulse forces

### Kinetic Energy

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

Mass and Weight - the difference

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

Young's Modulus - Tensile Modulus or Modulus of Elasticity - for steel, glass, wood and other common materials

### 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

### Motors and Pulley Selection

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

### Movement Ratio

Machines and the movement ratio (velocity ratio)

### Normal Flange I Beams

Properties of normal flange I profile steel beams

### Poisson's Ratios Metals

Some metals and their Poisson's ratios

### 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 the rate at which work is done or energy converted

### Pulleys

Pulleys, blocks and tackles

### Pulleys - Diameters and Speed

The pulley laws - driver and driven - diameter and rpm

### Radian

The radian - a unit of angle measure - angular velocity

### Range of Projectile

Motion in two dimensions - calculate the range of a projectile

### Rolling Resistance

Rolling friction and rolling resistance

### Rotating Shafts and their Moments

Torsional moments acting on rotating shafts

### Screw Jacks

Screw jacks and effort force

### Section Modulus - Convert between Units

Convert between Section Modulus units

### Steel Bolts - ASTM Grades

ASTM steel bolts - proof and tensile strength

### Steel Bolts - Metric Grades

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

### Steel Bolts - SAE Grades

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

### Steels - Endurance Limits and Fatigue Stress

Endurance limits and fatigue stress for steels

### Stiffness

Stiffness is resistance to deflection

### Stress

Stress is the applied force on a cross-sectional area

### Stress and Deflections of 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 unit area - strain is the deformation of a solid due to stress

### Stresses in Thin-Walled Tubes or Cylinders

Hoop and longitudinal stresses thin-walled tubes or cylinders

### Thermal Stress

Stress when restricting thermal expansion

### Torque - Work done and Power transmitted

The work done and power transmitted by a constant torque

### Torque or Moment of Force - online Converter

Torque or moment - the tendency of a force to rotate an object

### Torsion of Shafts

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

### UNC and UNF Screw Threads

Unified Screw Threads UNC and UNF - ANSI B1.1 - Coarse series and UNF Fine series

### Universal Gravitational Law

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

### Vector Addition

Online vector calculator - add vectors with different magnitude and direction

### Wind Velocity and Wind Load

Wind loads on surfaces

### Wire Rope Slings

Sling angles - and influence on capacity

### Work

Work done is the product of applied force and distance