Forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more.
Bolts, nuts and threaded rods - torque, tension and loads.
Thread data - metric, unified, ACME and others.
Acceleration of Gravity and Newton's Second Law
Acceleration of gravity and Newton's Second Law - SI and Imperial units.
Acceleration Units Converter
Converting between units of acceleration.
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.
Area Moment of Inertia - Typical Cross Sections I
Typical cross sections and their Area Moment of Inertia.
Area Moment of Inertia - Typical Cross Sections II
Area Moment of Inertia, Moment of Inertia for an Area or Second Moment of Area for typical cross section profiles.
Area Moment of Inertia Converter
Convert between Area Moment of Inertia units.
Beam Loads - Support Force Calculator
Calculate beam load and supporting forces.
Beams - Fixed at Both Ends - Continuous and Point Loads
Stress, deflections and supporting loads.
Beams - Fixed at One End and Supported at the Other - Continuous and Point Loads
Supporting loads, moments and deflections.
Beams - Supported at Both Ends - Continuous and Point Loads
Supporting loads, stress and deflections.
Belt Transmissions - Speed and Length of Belts
Calculate length and speed of belt and belt gearing.
Belts - Power Transmission and Efficiency
Calculate belts power transmission and efficiency
Belts - Pulley Diameters vs. Speed
The pulley laws - driver and driven - diameter and rpm
Bodies Moving on Inclined Planes - Acting Forces
Required forces to move bodies up inclined planes.
Friction, load and effort forces acting in ropes turned around bollards.
British Universal Columns and Beams
Properties of British Universal Steel Columns and Beams.
Force and tension in cables with uniform loads.
Car acceleration calculator.
Calculate position of center mass.
Center of Gravity
A body and the center of gravity.
Center of Gravity and Buoyancy
Stability - the center of gravity vs. the center of buoyancy.
Centripetal and Centrifugal Acceleration Force
Forces due to circular motion and centripetal / centrifugal acceleration.
The connecting rod mechanism.
Conservation of Momentum
The momentum of a body is the product of its mass and velocity - recoil calculator.
Density vs. Specific Weight and Specific Gravity
An introduction to density, specific weight and specific gravity.
Disk Brakes - Torque and Force
Forces and torque activated with disk brakes.
Drawbridge - Force and Moment vs. Elevation
Calculate the acting forces and moments when elevating drawbridges or beams.
Efficiency of Small Machine Elements
Friction and efficiency in bearings and roller chains.
Elevators - Force and Power
Required force and power to lift an elevator.
Energy is the capacity to do work.
Some typical properties of engineering materials like steel, plastics, ceramics and composites.
The force required to keep a system of forces in equilibrium.
Fibre-reinforced Polymer Composites
Mechanical properties of fibers used to reinforce polymer composites.
Flywheels - Kinetic Energy
The kinetic energy stored in flywheels - the moment of inertia.
Newton's third law - force vs. mass and acceleration.
The force ratio is the load force versus the effort force.
Forces acting on Body Moving in a Horizontal Plane
The forces acting on bodies moved in horizontal planes.
Forces and Tensions in Ropes due to Angle
Reduced load capacities in ropes, cables or lines - due to acting angle.
Formulas of Motion - Linear and Circular
Linear and angular (rotation) acceleration, velocity, speed and distance.
Friction - Friction Coefficients and Calculator
Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.
Gear Reducing Formulas
Output torque, speed and horsepower with gears.
Gear Trains - Bicycle Gearing Calculator
Gear train transmissions - bicycle gearing.
Gears effort force vs. load force.
A simple harmonic oscillator.
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.
Hooke's law - force, elongation and spring constant.
Hot Air Balloons - Calculate Lifting Weights
Calculate hot air ballons lifting forces.
Improvised Torque Wrench
Improvise a torque wrench with a luggage scale.
Impulse and Impulse Force
Forces acting a very short time are called impulse forces.
ISO 2841 - Spark Plugs Metric Threads
Metric threads spark plugs according ISO 28741.
Energy possessed by an object's motion is kinetic energy.
Use levers to magnify forces.
Loads and effort force with lifting wheels.
Mass Moment of Inertia
The Mass Moment of Inertia vs. mass of object, it's shape and relative point of rotation - the Radius of Gyration.
Mass vs. Weight
Mass vs. weight - the Gravity Force.
Metric Bolts - Minimum Ultimate Tensile and Proof Loads
Minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads.
Metric Nuts - Proof Loads
Proof loads of metric nuts - coarse and fine threads.
Metric Steel Bolts - Grades and Property Classes
Metric steel bolts, screws and studs - proof and tensile strength.
Modulus of Rigidity
Shear Modulus (Modulus of Rigidity) is the elasticity coefficient for shearing or torsion force.
Motors - Speed vs. Pulley Diameter
Pulley (Sheave) selection charts for motors ranging 850 - 3450 rpm.
Machines and movement ratio (velocity ratio).
Normal Flange I-Beams
Properties of normal flange I profile steel beams.
When a material is stretched in one direction it tends to get thinner in the other two directions.
Poisson's Ratios Metals
Some metals and their Poisson's Ratios.
Potential Energy - Hydropower
Elevation and potential energy in hydropower.
Power is the rate at which work is done or energy converted.
Calculate the range of a projectile - a motion in two dimensions.
Pulleys, blocks and tackles.
Radians vs. Degrees
Radian is the SI unit of angle. Convert between degrees and radians. Calculate angular velocity.
Radius of Gyration in Structural Engineering
Radius of gyration describes the distribution of cross sectional area in columns around their centroidal axis.
Restricted Thermal Expansion - Force and Stress
Stress and force when thermal expansion a pipe, beam or similar is restricted.
Rolling friction and rolling resistance.
Rotating Shafts - Torque
Torsional moments acting on rotating shafts.
Screw Jack - Effort Force vs. Load
Screw jacks and effort forces.
Section Modulus - Unit Converter
Convert between Elastic Section Modulus units.
Steel Bolts - ASTM Grades
ASTM steel bolts - 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 is resistance to deflection.
Stress is force applied on cross-sectional area.
Stress in Thick-Walled Cylinders or Tubes
Radial and tangential stress in thick-walled cylinders or tubes with closed ends - with internal and external pressure.
Stress in Thin-Walled Cylinders or Tubes
Hoop and longitudinal stress thin-walled tubes or cylinders.
Stress, Strain and Young's Modulus
Stress is force per unit area - strain is the deformation of a solid due to stress.
Support Reactions - Equilibrium
Static equilibrium is achieved when the resultant force and resultant moment equals to zero.
Three-Hinged Arches - Continuous and Point Loads
Support reactions and bending moments.
A toggle joint mechanism can be used to multiply force.
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
The torsion of solid or hollow shafts - Polar Moment of Inertia of Area.
Common types of trusses.
UNC and UNF - Unified Inch Screw Threads
ANSI/ASME B1.1 Unified National Thread - UNC Coarse series and UNF Fine series.
Universal Gravitational Law
Gravitational attraction between two objects vs. mass of the objects and the distance between them.
Online vector calculator - add vectors with different magnitude and direction - like forces, velocities and more.
W-Beams - American Wide Flange Beams
Dimensions of American Wide Flange Beams ASTM A6 (or W-Beams) - Imperial units.
Weight of Beams - Stress and Strain
Stress and deformation of vertical beams due to own weight.
Wind Load vs. Wind Speed
Wind load on surface - Wind load calculator.
Wire Rope Slings
Sling angles and influence on capacity.
Work done by Force
Work done by a force acting on an object.
Young's Modulus, Tensile Strength and Yield Strength Values for some Materials
Young's Modulus (or Tensile Modulus alt. Modulus of Elasticity) and Ultimate Tensile Strength and Yield Strength for materials like steel, glass, wood and many more.