Question

4. Suppose your writing desk is tilted
dov
se your writing desk is tilted a little. A book kept on it starts sliding
wh. Show the direction of frictional force acting on it.
5. You spill a bucket of soapy wate
ona
a bucket of soapy water on a marble floor accidently. Would it
it easier or more difficult for you to walk on the floor? Why?​

Answer 1

Answer:

4) in opposite direction of the book sliding.

5) it would be difficult to walk on a marble floor with soapy-watery surface because both of these reduces friction