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If F=mu.mg/cos theta + mu sin theta Then how to calculate min and max force and why d f/d theta= 0.

If F=mu.mg/cos theta + mu sin theta
Then how to calculate min and max force and why d f/d theta= 0.
 

Grade:11

1 Answers

abhay gupta
askIITians Faculty 199 Points
3 years ago
Dear student

as per mathematics, if any equation is in sine or cosine term then there graph must have atleast one minima or one maxima in given domain

so if differenciating F with respect to theta i.e dF/d(theta) will be zero then there is either maxima or minima and to conclude this differentiate it again i.e. d2F/d(theta)2and if it will be positive then at that point F is in minima, if it will be negative then at that point F is in maxima

Askiitians expert
Ankit

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