A special motorcycle that has drive torque only available at the front wheel and

Question

A special motorcycle that has drive torque only available at the front wheel and brake torque only available at the rear wheel (A) cannons do a sustained "wheels" in acceleration (I.e. Sustain a condition of the front wheel off the ground during acceleration) (B) cannot flip over the front wheel during braking (i.e. Sustain a lift of the rear wheel off the ground during braking) (C) if outfitted with different wheels of the same total mass and diameter but altered moment of inertia about the spin axes, the motorcycle will have altered accel-decel capacity (assuming sufficient friction for no slip and the same drive and brake torque limits). (D) all of (a) through (c) Bonus Question (3 pts) A special motorcycle that has drive torque only available at the front wheel and brake torque only available at the rear wheel (a) cannot do a sustained "wheely" in acceleration (i e. sustain a condition of the front wheel off the ground during acceleration) (b) cannot flip over the front wheel during braking (i.e. sustain a lift of the rear wheel off the ground during braking) (c) If outfitted with different wheels of the same total mass and diameter but altered moment of inertia about the spin axes, the motorcycle will have altered accel-decel capacity (assuming sufficient friction for no slip and the same drive and brake torque limits). (d) All of (a) through (c) (e) None of (a) through (c)

Explanation / Answer

A. As front wheel is drive wheel so it can't lift off from ground during acceleration .

B. As front wheel is drive and rear is brake wheel. So while braking there will not any momemt for flipping hence no flip.

C. If fitted with altered moment of inertia then (same dia and mass) then acceleration /deceleration will change ( Torque = (Moment of Inertia )*( Angular Acceleration )

And acceleration = (dia /2) * ( angular acceleration )

Hence acel decel capacity will change.

So all the option from A to C are correct.

Answer : (d) all of (a) through (c)

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