Posted by Claire on .
A string of length 50cm is used to hang a picture frame from a nail hammered on a smooth wall. The frame is 20 cm wide and weighs 10N. It hangs symetrically.
The angle which each part of the string makes with the vertical is 23.6.
- State the magnitude and direction of the force on the nail.
- Calculate the tension in the string.
I tried to work the first part and couldn't do it. Then I triedd the second part. Can anyone check my working and tell me whther it's right please?
T1 Sin 66.4 +T2 Sin 66.4 = 10N
T1Cos 66.4 = T2 Cos66.4
The I solved them simultaneously.
T1 = 5N and T2=5N. Therefore tension in string is 10N.
I don't have a clue what you did, but it was wrong. Your static equations are correct.
T1-T2=0 Or T1=T2 then
which does not lead you to your answers.