Answered

Westonci.ca is the ultimate Q&A platform, offering detailed and reliable answers from a knowledgeable community. Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

does friction help turning a doorknob??

Sagot :

sydrave
Yes -- without friction your hand would slip right off
snehashish65

The friction force acts as a contact force between the hands and doorknob to avoid slipping of hands.

Doorknobs are generally the small handles that are mounted on doors to avail the opening and closing of doors. These handles provide the turning moment to the door, which is given as,

[tex]T=F \times r[/tex]

Here, F is the contact force applied force between the knob and hands and r is the radial distance between the handle and door.

Now, the friction plays a vital role in turning the doorknob due to following reasons:

  • It plays the role of contact force to provide greater magnitude of turning moment (T), which will be helpful for smooth turning.
  • It will avoid the slipping of hands and therefore a strong grip is formed between the hands and doorknob.

Thus, we can conclude that the friction force acts as a contact force between the hands and doorknob to avoid slipping of hands.

Learn more about the friction here:

https://brainly.com/question/18754956

We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. We're glad you visited Westonci.ca. Return anytime for updated answers from our knowledgeable team.