Answer the following :
A. What is the reason for the heat being produced when we rub our hands?
B. Where will it require more effort to drag a box - on marble or on concrete road? Why? [5 MARKS]

Open in App

Solution

Part A : 3 Marks
Part B : 2 Marks

A. When we rub our hands friction between the two hands causes the molecules of surface to vibrate faster. This causes them to generate heat. Hence there is an increase in temprature.
B. More effort will be required to drag on the concrete road as marble is smoother and hence offers less resistance.

Suggest Corrections

Similar questions

What is the reason for the heat being produced when we rub our hands?

Assertion:- If we rub our hands together for several seconds, we will notice that our hands feel warm.

Reason:- This is because $C h e m i c a l e n e r g y \to M e c h a n i c a l e n e r g y \to H e a t e n e r g y$

When we rub our hands vigorously our hands get hot .Why ?

Join BYJU'S Learning Program