# Physics, Friction Force

Discussion in 'Homework Help' started by xxmeganmitchell, Mar 16, 2013.

1. ### xxmeganmitchell Thread Starter New Member

Mar 16, 2013
1
0

A fully laded oil super-tanker moves at a constant speed of 12 m/s. It's engines produce a constant forward force of 16 000 N. What is the size of the friction force acting on the tanker?

2. ### DerStrom8 Well-Known Member

Feb 20, 2011
2,428
1,328
If you're expecting us to just give you the answer, you're in the wrong place.

What have you done so far? Where are you getting stuck?

3. ### WBahn Moderator

Mar 31, 2012
17,750
4,797
Draw a free body diagram.

4. ### Papabravo Expert

Feb 24, 2006
10,145
1,791
Hint #1: At a constant speed, the acceleration of the tanker is zero. What does Newton's 2nd law tell you about this situation?

5. ### BillO Well-Known Member

Nov 24, 2008
985
136
You actually wrote the answer down.

6. ### Papabravo Expert

Feb 24, 2006
10,145
1,791
Not quite, you still have to make a connection between the available facts and the actual answer. You also have be familiar with the reference.

7. ### WBahn Moderator

Mar 31, 2012
17,750
4,797
I suspect we can give this one a rest, guys. It looks like another one-hit wonder that just wanted the answer posted and isn't interested in thinking about the problem in light of whatever hints we might give.

DerStrom8 likes this.