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Angle of Friction

maximum possi...

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maximum possible value of coeffician of friction .

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Consider a uniform cubical box of side

^{'} a^{'}

on a rough floor that is to be moved by applying minimum possible force F at a point

^{'} b^{'}

above its centre of mass (see figure). If the coefficient of friction is

μ = 0.4,

the maximum possible value of

100 \times \frac{b}{a}

for the box not to topple before moving is .

Q. An insect crawls up a hemispherical surface very slowly, figure. The coefficient of friction between the insect and the surface is

1 / 3

. If the line joining the center of the hemispherical surface to the insect makes an angle

α

, the maximum possible value of

α

Q. An insect crawls up a hemispherical surface very slowly. The coefficient of friction between the insect and the surface is 1/3. If the line joining the centre of the hemispherical surface to the insect makes an angle

α

with the vertical, find the maximum possible value of

α

.

Q. An insect crawls up a hemispherical surfaces very slowly as shown in the figure. The coefficient of friction between the insect and the surface is

\frac{1}{3}

. If the line joining the centre of the hemispherical surface to the insect makes an angle

α

with the vertical, the maximum possible value of

α

Q. The minimum value of the coefficient of friction between the object and the floor of the truck which makes rolling of the object possible is

μ \geq \frac{a}{k g}

. what will be k?

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