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Question Number 48833 by Tawa1 last updated on 29/Nov/18

Commented by Ali Yousafzai last updated on 29/Nov/18

Commented by Tawa1 last updated on 29/Nov/18

No answer there sir.  I dont know if it is correct but i will use your work.   God bless you sir

$$\mathrm{No}\:\mathrm{answer}\:\mathrm{there}\:\mathrm{sir}.\:\:\mathrm{I}\:\mathrm{dont}\:\mathrm{know}\:\mathrm{if}\:\mathrm{it}\:\mathrm{is}\:\mathrm{correct}\:\mathrm{but}\:\mathrm{i}\:\mathrm{will}\:\mathrm{use}\:\mathrm{your}\:\mathrm{work}.\: \\ $$$$\mathrm{God}\:\mathrm{bless}\:\mathrm{you}\:\mathrm{sir} \\ $$

Commented by tanmay.chaudhury50@gmail.com last updated on 29/Nov/18

i have put cos50^o ≈0.64 for calculation  if you put exact value of cos50^o   then your  answer is correct...

$${i}\:{have}\:{put}\:{cos}\mathrm{50}^{{o}} \approx\mathrm{0}.\mathrm{64}\:{for}\:{calculation} \\ $$$${if}\:{you}\:{put}\:{exact}\:{value}\:{of}\:{cos}\mathrm{50}^{{o}} \:\:{then}\:{your} \\ $$$${answer}\:{is}\:{correct}... \\ $$

Commented by Tawa1 last updated on 29/Nov/18

God bless you sir

$$\mathrm{God}\:\mathrm{bless}\:\mathrm{you}\:\mathrm{sir} \\ $$

Answered by tanmay.chaudhury50@gmail.com last updated on 29/Nov/18

45=μ×9×10  μ=0.5  Fcos50^o =0.5×9×10  F=((45)/(cos50^o ))=70.0076

$$\mathrm{45}=\mu×\mathrm{9}×\mathrm{10} \\ $$$$\mu=\mathrm{0}.\mathrm{5} \\ $$$${Fcos}\mathrm{50}^{{o}} =\mathrm{0}.\mathrm{5}×\mathrm{9}×\mathrm{10} \\ $$$${F}=\frac{\mathrm{45}}{{cos}\mathrm{50}^{{o}} }=\mathrm{70}.\mathrm{0076} \\ $$$$ \\ $$

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