Posted by **Brandon** on Wednesday, January 5, 2011 at 9:07pm.

A weight W is now placed on the block and

7.7 N is needed to push them both at constant

velocity.

What is the weight W of the block?

Answer in units of N.

- Physics -
**drwls**, Wednesday, January 5, 2011 at 10:18pm
Information from a previous question, probably about the coefficient of friction, is needed to answer this.

- Physics -
**Anonymous**, Thursday, February 2, 2012 at 2:37pm
What you need to do is use the equation

Ffriction=coefficient of friction*Normal.

and remember that normal is the total weight of the objects.

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