0

Guest

Courses New

Explain why two glass plates with a thin film of water between them are difficult to separate by a direct pull but can easily be separated by sliding.

Explain why two glass plates with a thin film of water between them are difficult to separate by a direct pull but can easily be separated by sliding.

Grade:10

1 Answers

Jitender Pal
askIITians Faculty 365 Points
8 years ago
There is adhesive force acting between the water molecules and the molecules present in the glass. It is much larger than the cohesive force acting between the water molecules. Due to this, a large amount of force is needed to separate the glass together. So, it is difficult to separate the glass plates by direct pull.
By sliding the glass plates, the cohesive force acting between the water molecules becomes greater than the adhesive force. Thus, there is much lower force needed to separate the glass plates. So, glass plates can be easily separated by sliding.

Think You Can Provide A Better Answer ?

Other Related Questions on Mechanics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More