Saturday

September 20, 2014

September 20, 2014

Posted by **Hannah** on Sunday, May 27, 2012 at 4:45pm.

The angles bewteen anad b and b and c are all 22 degrees.

I do not kno

- Physics(thank you for the help) -
**Hannah**, Sunday, May 27, 2012 at 4:45pmI do not know how to solve for a ratio.

- Physics(thank you for the help) -
**bobpursley**, Sunday, May 27, 2012 at 4:54pmPhysics(thank you for the help) - bobpursley, Sunday, May 27, 2012 at 4:53pm

I am uncertain what part b is.

I am uncertain what F is in the ratio F/Fa

If F is the total force, then F/Fa=k by definition. So frankly, I have no idea what the question is asking.

- Physics(thank you for the help) -
**Elena**, Sunday, May 27, 2012 at 5:05pmAs the forces FB and FC are equal the horizontal component of force is given as FB = FC = F•cos θ,

θ =22º

The net force applied on the elephant is

Fnet = FA + 2 F•cos θ ........ (1) ( there are two forces on either side of FA)

Given that Fnet is k times FA

Fnet = k• FA where k = 2.32•FA

Fnet = 2.32• Fa .............. (2)

Plug in (2) in (1)

2.32 •FA = FA + 2• F• cos θ

2.32• FA - FA = 2• F•cos θ

(2.32 - 1) • FA = 2 F cos θ

1.32• FA= 2• F• cos θ

Ratio

F / FA = 1.32/( 2• cos θ)=

=1.32/2•cos22º = 0.71

**Answer this Question**

**Related Questions**

Physics - A baby elephant is stuck in a mud hole. To help pull it out,game ...

physics - A baby elephant is stuck in a mud hole. To help pull it out, game ...

Physics - A baby elephant is stuck in a mud hole. To help pull it out, game ...

Physics - A car is being pulled out of the mud by two forces that are applied by...

Physicis - Given: Two teams of children are well-matched, and they pull on the ...

physics - A cat is stuck in a tree. You are designated with the job to get it ...

physics - A car is being pulled out of the mud by two forces that are applied by...

physics - A car is being pulled out of the mud by two forces that are applied by...

physics (Newton's Laws) - Please help, A cat is stuck in a tree. You are ...

physics - a rope can withstand a maximum tension force of 450n before breaking ...