Posted by **Einstein** on Friday, December 14, 2007 at 1:44pm.

Rachel pulls her 13 kg suitcase at a constant speed by pulling on a handle that makes an angle x with the horizontal. The frictional force on the suitcase is 28 N and Rachel exerts a 44 N force on the handle.

a) What angle does the handle make with the horizontal?

b) What is the normal force exerted on the suitcase?

Thoughts: normal force is equal to the weight minus the y component

- Physics -
**drwls**, Friday, December 14, 2007 at 2:02pm
(a) 44 cos x = 28 (horizontal equlibrium)

Solve for the angle x.

x = cos^-1 28/44 = 50.5 degrees

(b) use vertical equilibrium

up forces = down force

44 sin x + (normal force) = M g = 127.4 N

Solve for the normal force. You could also solve for the coefficient of kinetic friction, but they don't ask for that.

- Physics -
**Einstein**, Friday, December 14, 2007 at 5:48pm
Thanks for your help.

## Answer this Question

## Related Questions

- Physics - Rachel Pulls her 18 KG suitcase at at a constant speed by pulling on ...
- 11th grade physics - Rachel pulls her 177N suitcase at a constant speed by ...
- Physics - You are pulling a suitcase through the airport at a constant speed. ...
- Physics - You are pulling a suitcase thru the airport at a constant speed. The ...
- physics - A woman at an airport is towing her 21.0 kg suitcase at constant speed...
- Physics - A woman at an airport is towing her 20.0 kg suitcase at constant speed...
- physics - A woman at an airport is towing her 27.0 kg suitcase at constant speed...
- AP Physics - A woman at an airport is towing her 17.0 kg suitcase at constant ...
- physics - A woman at an airport is towing her 17.0 kg suitcase at constant speed...
- physics - A 23 kg suitcase is being pulled with a constant speed by a handle ...