(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

How much force is required to push a wheel of radius 50 mm and moment of inertia 3.21*10^-4 kgm^2 to 20 mph in 5 seconds? The wheel has a mass of 0.29 kg.

The wheel is to be pushed straight and level at its axel 90 degrees to the horizontal.

2. Relevant equations

T = Ia = 5.74 Nm

F = T/r

3. The attempt at a solution

F = T/r = 5.74/0.05 = 114.8 N

My answer can't be correct because 114.8 N seems far too much force required to accelerate a 50 mm radius wheel to 20 mph in 5 s. That is less force required to push the 200 kg vehicle it supports, and there are another three wheels!

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# Homework Help: Force required to push wheel (not torque)

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