Question

Science Chapter 12 class 8 cbse​

Answer 1

Answer:

1 - activity - rough surface , method- make any surface rough it will Increase fricition more

2- activity- increase mass of any object , method - grease any iron weel it will Increase mass of it

3- activity- harder surface together in contact,method - take any harder surface area and any harder material rub it together it will Increase friction of it

4 - activity- sprinkle sand on surface,method - take some sand and sprinkle on a clean surface it also increase friction

5 - activity- dry surface , method - dry any hard surface after drying it there is force of friction is increased .

Explanation:

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