Answers

2015-08-02T19:48:08+05:30
YES I Agree with the statement the friction is both good & evil

advantages - help us to get more grip in cycle handles,brakes
                      a nail cannot be fixed in the wall without friction.
                     we can walk on the floor because of friction otherwise it would be                               slippery
dis advantages- it heat machines fastly.
                          due to friction we have to exert more energy to moe things 
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