As a capacitor discharges, its charge changes continuously. Find
the differential equation governing this variation.
Things are roughened up and friction is now added to the
approximate simple pendulum
At what positions and speeds can the bomb be dropped to destroy the
Can you work out which of the equations models a bouncing bomb?
Will you be able to hit the target?
See how the motion of the simple pendulum is not-so-simple after
How do these modelling assumption affect the solutions?
This is the technology section of stemNRICH - Core.
engNRICH is the area of the stemNRICH Advanced site devoted to the mathematics underlying the study of engineering
An article about the kind of maths a first year undergraduate in
physics, engineering and other physical sciences courses might
encounter. The aim is to highlight the link between particular
maths. . . .
Explore the voltages and currents in this interesting circuit configuration.
Look at the calculus behind the simple act of a car going over a
In this short problem we investigate the tensions and compressions
in a framework made from springs and ropes.
PhysNRICH is the area of the StemNRICH site devoted to the mathematics underlying the study of physics
This short question asks if you can work out the most precarious
way to balance four tiles.
What will happen when you switch on these circular circuits?
What is a random pattern?
Show that even a very powerful spaceship would eventually run out
of overtaking power
Can you set the logic gates so that this machine can decide how many bulbs have been switched on?
Given the equation for the path followed by the back wheel of a
bike, can you solve to find the equation followed by the front
This article, including exercises, gives a thorough grounding in
the topic of AC/DC circuits.
Can you match up the entries from this table of units?
Which parts of these framework bridges are in tension and which parts are in compression?
In an extension to the Stonehenge problem, consider the mechanical
possibilities for an arrangement of frictional rollers.
Derive Euler's buckling formula from first principles.
Put your complex numbers and calculus to the test with this
Prove that you can make any type of logic gate using just NAND
A preview of some of the beam deflection mechanics you will look at
in the first year of an engineering degree
A look at the fluid mechanics questions that are raised by the
A series of activities to build up intuition on the mathematics of
What is an AC voltage? How much power does an AC power source
Explore the power of aeroplanes, spaceships and horses.
A look at power generation using wind turbines.
Advanced problems in the mathematical sciences.
A look at a fluid mechanics technique called the Steady Flow
Explore the mathematics behind the famous Wheatstone Bridge
Find out how to model a battery mathematically
This is the area of the advanced stemNRICH site devoted to the core applied mathematics underlying the sciences.
An introduction to a useful tool to check the validity of an equation.
Estimate these curious quantities sufficiently accurately that you can rank them in order of size
Was it possible that this dangerous driving penalty was issued in
Have you got the Mach knack? Discover the mathematics behind
exceeding the sound barrier.
Doug has just finished the first year of his undergraduate
engineering course at Cambridge University. Here he gives his
perspectives on engineering.
Can you work out what this procedure is doing?
Bricks are 20cm long and 10cm high. How high could an arch be built
without mortar on a flat horizontal surface, to overhang by 1
metre? How big an overhang is it possible to make like this?
Explain why, when moving heavy objects on rollers, the object moves
twice as fast as the rollers. Try a similar experiment yourself.
Given the graph of a supply network and the maximum capacity for
flow in each section find the maximum flow across the network.
Can you think like a computer and work out what this flow diagram