- #1
faoltaem
- 31
- 0
hey i have a question from my physics tute but I'm lost.
a spider is suspended on lines of web between two level branches. each line of web is 72cm long and the branches they are attached to are 1.1m apart
1) given that the spider weighs 5.2g, calculate the tension force in either of the 72cm threads.
2) a gust of wind blows the branches closer together. does the tension in the threads increase, decrease or remain the same?
i'm normally pretty good at mathmatic type questions but I'm just really lost,like i get that the weight needs to become
W = mg = 0.0052 x 9.81 = 0.051 N
but i think I'm lost because I'm used to working with angles and because the triangle formed doesn't have any right angles i can't work any out.
so even if you could just give me a formula i'd be really grateful, but any help you can give me would be great.
a spider is suspended on lines of web between two level branches. each line of web is 72cm long and the branches they are attached to are 1.1m apart
1) given that the spider weighs 5.2g, calculate the tension force in either of the 72cm threads.
2) a gust of wind blows the branches closer together. does the tension in the threads increase, decrease or remain the same?
i'm normally pretty good at mathmatic type questions but I'm just really lost,like i get that the weight needs to become
W = mg = 0.0052 x 9.81 = 0.051 N
but i think I'm lost because I'm used to working with angles and because the triangle formed doesn't have any right angles i can't work any out.
so even if you could just give me a formula i'd be really grateful, but any help you can give me would be great.