The bike can only produce energy (E) to a finite level which translates from internal combustion through the engine, then gear box, then chain and sprockets and finishing at the base of the back wheel through to a semi-static salt surface.

the speed achievable (c2) is therefore less the greater the volume of mass, (excluding drag factors).

So we start with

*E*=

*mc*

^{2}

which on introduction of pressure and volume is

*M*=

*E*

_{0}+

*pV*

_{0}

*c*

^{2}

^{}

In terms of relativistic energy the equation is which basically means, despite other contributory factors, I need to loses some weight to go a little bit faster.

The real skill with this is to avoid diets at all costs, they don't work because bodies adapt to food restriction and go into 'preservation' mode of lethargy and cravings.

'Nutritional adjustment' is a far better policy with a collective of simple annoying processes replacing the outright anxiety of a traditional diet.

Nutritional adjustment strategies are -

1. Eat sensible, nutritious meals and use a slightly smaller plate to eat the meals off so as to fractionally reduce portion size.

2. Cut out bread (savoury cake) sweets, chocolate, beer and wine which all contain non-productive calories.

3. Do fifteen minutes of intense aerobic exercise every second morning before breakfast stimulate metabolism.

4. Imagine going faster weighing less, think about it when tempted to cheat with sweets.

5. Drink green tea with lemon and a little honey.

6. On one day a week have a bottle of beer as a reward, . . . but two beers are a failure.

7. Think thin, looking great tastes good all the time.

^{}

Ha! Ralfy, you don't really need to do a relativistic calculation, unless you are planning on traveling near the speed of light!

ReplyDeleteAll you really need is F=ma.

What you want is to maximize acceleration given the amount of force your vehicle can apply, via the tires, to the ground. The equal and opposite reaction of the backward-facing force applied by the wheels to the ground will be a force propelling your vehicle forward.

Let's assume the force provided by the engine is constant. This isn't exactly accurate, because the grip of the tires actually improves the heavier the vehicle gets, but assuming perfect grip the force will be constant and will only depend on the engine.

So with that constant force, we have

F = m * a

Solving for acceleration, we have

a = F / m

Notice the inverse relationship between mass an acceleration here -- the lower the mass, the higher the acceleration for the same magnitude of force.

So yeah, the lower you can make your mass, the better your acceleration!

We just need Newton to do this, and not Einstein.

Unless you really do get close to the speed of light. In which case, you will age slower than everybody watching you because of relativistic time dilation. :)

Cheers,

Brian (former physicist)