A particle is projected along the line of greatest slope up a rough plane inclined at an angle of `45^(@)` with the horizontal. If the coefficient of friction is `1//2` . Their retardation is:A. `(g)/(2sqrt(2))`B. `(g)/(sqrt(2))`C. `(g)/(sqrt(2))(1-(1)/(2))`D. `(g)/(sqrt(2))(1+(1)/(2))`

A particle is projected along the line of greatest slope up a rough pl

1.	A particle is projected along the line of greatest slope up a rough plane inclined at an angle of `45^(@)` with the horizontal. If the coefficient of friction is `1//2` . Their retardation is:A. `(g)/(2sqrt(2))`B. `(g)/(sqrt(2))`C. `(g)/(sqrt(2))(1-(1)/(2))`D. `(g)/(sqrt(2))(1+(1)/(2))`
Answer» Correct Answer - D The retardation a is given by `a=gsin45^(@)+mugcos45^(@)` `=(g)/(sqrt(2))+(1)/(2)gxx(1)/(sqrt(2))=(g)/(sqrt(2))(1+(1)/(2))` .

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A particle is projected along the line of greatest slope up a rough plane inclined at an angle of `45^(@)` with the horizontal. If the coefficient of friction is `1//2` . Their retardation is:A. `(g)/(2sqrt(2))`B. `(g)/(sqrt(2))`C. `(g)/(sqrt(2))(1-(1)/(2))`D. `(g)/(sqrt(2))(1+(1)/(2))`

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