Posted by **John** on Tuesday, April 24, 2012 at 3:00am.

I have this mechanics problem. Please help me solve it.

Rory, Aurora and Raoul are three lions fi ghting over a piece of meat of mass 12

kg.

Each lion exerts a horizontal pull. Rory pulls with a force of 800 N.

Aurora, who is 120degrees to Rory's right, exerts a force of 400 N.

Raoul is 140 degrees to Rory's left.

The meat accelerates in Rory's direction.

(a) Find the force which Raoul is exerting.

Thank you in advance.

- Mechanics problem - Newtons laws - resultant force -
**Jat**, Wednesday, April 25, 2012 at 5:10am
Let F-Raoul be the force exerted by Raoul.

Consider the direction perpendicular to Rory's direction,

There is no nett force in that direction as there is no movement along it.

F-Raoul Cos(40º) = 400 N * Cos(60º) ------> F-Raoul = 261 N

Nett force in Rory's direction = 800 N - 261 N * Sin(40º) - 400 N * Sin(60º).

You just apply F = m*a to find the acceleration.

- Mechanics problem - Newtons laws - resultant force -
**smart guy**, Sunday, May 13, 2012 at 2:36am
In the case of resolving the force perpendicular to Rory's direction, isnt it suppose to be F-Raoul cos(50º) = 400 cos(30º) ?

## Answer This Question

## Related Questions

- Math - Steven bought a piece of meat and cut it into three pieces. The mass of ...
- mechanics - A particle of mass 10 kg is acted on by a resultant force, F newtons...
- physics - A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72...
- Calculus - Use newtons method and the function f(x)=x^2-a to derive the ...
- physics - At a picnic, there is a contest in which hoses are used to shoot water...
- conversion - how to convert 32.2 pounds mass to pounds force, to kilograms, and ...
- engineering mechanics - the greatest and least resultant of two forces are ...
- Resultant Force? - a force F1 of 35 newtons pulls at an angle of 15 degrees ...
- Mechanics - When a problem is statically indeterminate, what additional ...
- College Physics - Two forces, F⃗ 1 and F⃗ 2, act at a point, as ...

More Related Questions