The two ropes seen in the figure are used to lower a 255 kg piano 5.3m from a second-story window to the ground.

http://session.masteringphysics.com/problemAsset/1168416/2/knight_Figure_11_09.jpg

Question

The two ropes seen in the figure are used to lower a 255 kg piano 5.3m from a second-story window to the ground.

http://session.masteringphysics.com/problemAsset/1168416/2/knight_Figure_11_09.jpg

anonymous · Answer

How do I find T1 and T2 ?

rane · Answer

do u know the formula for finding tension force

isaiah.feynman · Answer

Umm @RANE there is no formula for tension.

rane · Answer

yes there is

isaiah.feynman · Answer

The formula arises when you are summing up the forces acting on an object attached to a cord.

isaiah.feynman · Answer

And I don't understand the diagram.

rane · Answer

the diagram just gives some extra information that is not even required to find the tension force

rane · Answer

F = ma, where 
 T= g - F

isaiah.feynman · Answer

How did you arrive at this???

rane · Answer

wht do u mean?

rane · Answer

this is the formula that could be used to find tension force when force is already given

isaiah.feynman · Answer

Where did you find this formula?

rane · Answer

i have been using this

isaiah.feynman · Answer

Then the tension becomes negative

rane · Answer

so?

souvik · Answer

the piano is at rest...right?

rane · Answer

yup

souvik · Answer

so first of all we to divide T1 and T2 into two components...horizontal(X axis) and vertical.(Y axis)

souvik · Answer

|dw:1374127570812:dw|
i draw a simple diagram there T1(y) and T2(y) is the vertical component of T1 and T2 respectively..and  T1(x) and T2(x) is the horizontal component of T1 and T2 respectively..