Is it true that a book kept on a tilted writing desk starts sliding, the direction of frictional force is the same as the direction of motion?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

True

False

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The above statement is False.
The force that resists the motion between any surfaces in contact is known as friction. For example, a frictional force is created when a book is placed on the writing desk. As the object moves, the frictional force operates in the opposite direction.
We can define sliding friction as the resistive force created by any two objects sliding against each other; this is known as kinetic friction and the force needed to keep a surface sliding along another surface.
The correct statement would be, a book kept on a tilted writing desk starts sliding; the direction of frictional force is different from the direction of motion.

Watch 3-min video & get full concept clarity