Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
There is a critical angle for the leg where if exceeded the foot would slip. The less the available friction the smaller the critical angle.
Even without ice, try to walk on a dirt path using a really long stride and when your foot pressed down when the leg is at a high enough angle away from vertical it will slide. It is the same reason it is not recommended placing ladders on high angles or they will slip.
The secret is that you don’t need friction to run on ice, only perfect balance. Friction is only needed for acceleration and deceleration. Because when the normal force is parallel to the impact force there is no need for friction, and you can balance the direction of the impact force so the average direction is parallel to the normal force.
μ=tan(cθ)" id="MathJax-Element-1-Frame" role="presentation" style="margin: 0px; padding: 0px; border: 0px; font-variant: inherit; font-stretch: inherit; line-height: normal; font-family: inherit; vertical-align: baseline; display: inline; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative;" tabindex="0"> without ice, try to walk on a dirt path using a really long stride and when your foot pressed down when the leg is at a high enough angle away from vertical it will slide. It is the same reason it is not recommended placing ladders on high angles or they will slip.
As far as friction is concerned, I think we are supposed to take smaller steps so that friction force is lesser. But this does not mean that we cannot walk! By lesser friction, we mean that the friction must be small enough to not slip backwards.
Here is the answer from physics stack exchange that I think solves the problem once and for all:
"The reason for small steps is that the lateral forces are decreased. Imagine taking a large step on concrete. When you first put your foot down well in front of you, it will be pushing forwards on the concrete. At the end of that step when that foot is well behind you, it will be pushing backward on the concrete. The larger the step, the larger these forward and backward forces.
Your ordinary shoes on ice can only sustain small forwards and backwards forces before they slip. To avoid slipping, we take smaller steps."-Olin Lathrop
The answer is - “It should be smaller friction”
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !