Question

solve this . 50 points​

Answer 1

Answer:

Resolving the components of mg along horizontal and vertical ie, mg sin θ and mg cos θ.

Component mg sin θ moves the block in forward direction for this we have

mg sin θ > f ________(i)

Also, mg cos θ+R=mg

or R=mg(1−cosθ)  

and f=μR=μmg(1−cosθ) _______(ii)

From Equations. (i) and (ii), we have

mg sin θ > μmg (1 cosθ)

sin θ > μ (1−cosθ)

or  2 sin θ/2 cosθ²>μ 2 sin2 θ/2

cosθ/2/ sinθ/2 > μ  or cot θ/2  > μ

B)  Greater than μ

PLZ FOLLOW ME

Explanation:

Answer 2

Answer:

what did the first one sais