Maths Question
The question:
https://imgur.com/a/zbzOast
I have done:
R+20sin30 -20g= 0
Making R= 20g-20sin30
F=µR and F = 20cos30
so µ = (20g-20sin30)/20cos30
so µ= (5√3)/93 but the solution bank says µ= (5√3)/103 even though the book has my answer.
Where have I gone wrong?
https://imgur.com/a/zbzOast
I have done:
R+20sin30 -20g= 0
Making R= 20g-20sin30
F=µR and F = 20cos30
so µ = (20g-20sin30)/20cos30
so µ= (5√3)/93 but the solution bank says µ= (5√3)/103 even though the book has my answer.
Where have I gone wrong?
(edited 4 years ago)
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