SELECT * FROM question_mgmt as q WHERE id=6434 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 explain why objects moving in fluids must have spe

Question:

Explain why objects moving in fluids must have special shapes.

Answer:

When a body moves in fluid, it experiences a force of friction called a drag force. It fluids, to overcome the frictional force, objects given special shapes. Frictional force can be minimized by changing in shape of the object. The special shape of the body exerts less friction and move easily in the fluid. That’s why objects moving in fluids must have special shapes.


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