friction is very useful as it helps in the dash of the bodies

friction is very useful as it helps in the dash of the bodies PRACTICE QUESTIONS: CLASS: 8 SCIENCE FRICTION FILL IN THE BLANKS 1. 2. 3. Friction is very useful as it helps in the of the bodies. Static friction is — . than rolling friction. Friction arises due to the interlocking of depressions and Friction depends upon . — of surfaces. present in abody Friction does not depend upon .................. Of the two surfaces in contact. When two bodies are made extra smooth the force of friction Frictional force is Frictional is a — in nature. evil. . of energy. Friction causes a lot of — Friction is responsible for .......... of machine parts. A1 SF FOR THF FOLLOWING STATEMENTS