Mechanics

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

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 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

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 Elasticity - Young Modulus for some common Materials

Young Modulus (Tensile Modulus) - Elastic Properties - for some common materials - steel, glass, wood and more

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

Moment of Inertia of an Area

Second Moment of Area or Area Moment of Inertia

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

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

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