Quick thinking

Classical Mechanics Level 5

Ranjiv is riding a bicycle along a straight road. He is in a hurry to get home and is riding as fast as he can when the road bends sharply to the left. In order to turn, what does Ranjiv do first?

Turn handlebars to the right Lean to the right Turn handlebars to the left and then lean to the left Turn handlebars to the left Lean to the left Turn handlebars to the right and then lean to the right

Raghav Vaidyanathan by Raghav Vaidyanathan , 23, USA

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1 solution

What if I told you that every time you turn, you actually steer opposite to the the direction you want to go? Don't believe me? Try this link .

3 Helpful 0 Interesting 0 Brilliant 0 Confused

Have u watched the movie 'Cars'.?? I answered on the basis of the scene i watched in it. :D

Tanishq Varshney - 6 years, 1 month ago

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ya... lightening mcqueen is advised so by the legendary car who won many piston cups....

Sarthak Rath - 6 years, 1 month ago

Your choices are too short to give an accurate representation to what they mean. Sure, you turn a little but right to get your tilt going, but immediately after that you turn your handlebars left and lean left.

I have added a "first" to make the question more clearer.

Daniel Liu - 6 years, 1 month ago

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Sigh, a little disappointed I got this one wrong because I'm a biker...

Daniel Liu - 6 years, 1 month ago

Thanks for adding "first" to the problem. But even then, if you are going fast enough, the machine automatically tilts to the left, you don't have anything to do there. Once the handlebars are forced to the right, no further effort(this is ideally true if one is riding fast enough) is needed from your side to turn.

Raghav Vaidyanathan - 6 years, 1 month ago

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You don't want your bike wheel to be turning right when you are actually doing the left turn, or else you'll just slip and crash. The right turn is preliminary, at best when you actually turn left your handlebars should be at neutral position.

Daniel Liu - 6 years, 1 month ago

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@Daniel Liu – Yes, I do get that. I do not mean that we have to keep applying force to the right. What I meant is that, once a small right turn is initiated, the inherent stability of a fast moving bike will automatically bring the handlebars to stable neutral position and make it lean toward the left. At least, that is what I think.

Raghav Vaidyanathan - 6 years, 1 month ago

oopes ... .....Thanks For Link

Karan Shekhawat - 6 years, 1 month ago

They must lean left but turn right....all answers are wrong

Philip Orand - 6 years, 1 month ago

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A torque on the handlebars to the right is applied.

The front wheel will then rotate about the steering axis to the right and the tire will generate forces in the contact patch to the right.

The machine as a whole steers to the right

Because the forces in the contact patch are at ground level, this pulls the wheels "out from under" the bike to the right and causes it to lean to the left.

The rider, or in most cases, the inherent stability of the bike, provides the steering torque necessary to rotate the front wheel back to the left and in the direction of the desired turn.

The bike begins a turn to the left.

The rider doesn't have to do anything, it all happens on its own.

Raghav Vaidyanathan - 6 years, 1 month ago

I know this, I trust you. When you turn, you turn de handlebar a little bit to the opposite side you want to turn and then you lean to the direction you want.

Charles Grenier - 6 years, 1 month ago

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