Posted by **Catherine** on Friday, February 18, 2011 at 5:42pm.

A suitcase of weight mg = 450 is being pulled by a small strap across a level floor. The coefficient of kinetic friction between the suitcase and the floor =0.640

a) Find the optimal angle of the strap above the horizontal. (The optimal angle minimizes the force necessary to pull the suitcase at constant speed.)

b) Calculate the minimum tension in the strap needed to pull the suitcase at constant speed?

My answer for a is 32.6 degrees...it's right... but I can't do b... My answer for the tension is 534N and I know it's wrong... Please help

## Answer This Question

## Related Questions

- Physics (please help!!) - A suitcase of weight mg = 450 is being pulled by a ...
- Physics - At the airport, you pull a 15kg suitcase across the floor with a strap...
- physics - At the airport, you pull a 18 kg suitcase across the floor with a ...
- physics PLEASE HELP! - The coefficient of kinetic friction between a suitcase ...
- physics - The coefficient of kinetic friction between a suitcase and the floor ...
- Physics - The coefficient of kinetic friction between a suitcase and the floor ...
- Physics - The coefficient of kinetic friction between a suitcase and the floor ...
- Physics - The coefficient of kinetic friction between a suitcase and the floor ...
- physics - Starting from rest, a 11.70 kg suitcase slides 3.14 m down a ...
- Physics - Starting from rest, a 11.50 kg suitcase slides 3.18 m down a ...

More Related Questions