a force of 60N is applied on a object of 30 kg to move it with a constant speed  of 6m/s .
 
The answer in  my book is 60 n . I'm confused .does this mean that the force we will apply will be equal to the frictional force.  ( if i will write 70 n then will the answer be same 70N???)
Does friction depends upon the velocity??
 
Please explain.

Asked by yogeshmittal177 | 20th Oct, 2015, 09:59: PM

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Answered by Romal Bhansali | 21st Oct, 2015, 11:49: AM