Question

A glass rod is rubbed with silk will it mass increase or decrease

Answer 1

It happens because at the time of rubbing Rod become negatively charge and silk cloth Positively charge

so mass of rod increase but a very little amount (negligible)

and mass of silk decrease (negligible amount)

Answer 2

Answer:

Decrease

Explanation:

When rubbing glass rod with silk, some electrons get transferred from rod to silk. So rod gets positively charged whereas silk gets negatively charged. Hence mass of the glass rod decreases (negligible)