A body of mass 100 g is sliding from an inclined plane of inclination `30^(@)`. What is the frictional force experienced if `mu = 1.7` ?

Options

A. `1.7 xx sqrt(2 ) xx (1//sqrt(3))N`
B. `1.7 xx sqrt(3) xx (1//2) N `
C. `1.7 xx sqrt(3)` N
D. `1.7 xx sqrt(2) xx (1//3)` N

Answer

b

Explanation

`F = mu mg cos theta = 1.7 xx (100//1000) xx 10 xx sqrt(3)//2`
` = 1.7 xx sqrt(3) xx 1//2 N`