SELECT * FROM question_mgmt as q WHERE id=6425 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=375 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Friction fill in the blanks a friction opposes the

Question:

Fill in the blanks:
(a) Friction opposes the _____________ between the surfaces in contact with each other.
(b) Friction depends on the _____________ of surfaces.                                                                                                                                                                      (c) Friction produces __________.
(d) Sprinkling of powder on the carrom board ________ friction.
(e) Sliding friction is ___________ than the static friction.

Answer:

(a) Motion

Friction is the opening force which change in state of the motion.

(b) Nature

Friction depends on the nature of the surface. Rough surface have high friction and smooth surface have less friction.

(c) Heat

Friction produces heat, it is the opposing force acting on the surface.

(d) Reduce

Powder is used as lubricant to smoothen the surface.

(e) Less

Sliding friction is less than the static friction, sliding friction is less than the static friction, sliding friction is the friction when one slides over another body.


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