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# In the figure, a ladder of mass m is shown leaning against a wall. It is in static equilibrium making an angle null and that between the floor and the ladder is . The normal reaction of the wall on the ladder is and that of the floor is . If the ladder is about to slip, then

## The correct answer is:

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tothe frictional force f versus P graph will look like

### A block of mass m is on an inclined plane of angle null. The block is held stationary by applying a force P parallel to the plane. The direction of force pointing up the plane is taken to be positive. As P is varied from

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### The upper half of an inclined plane with inclination null= 0.5]

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### Two blocks of masses and are connected with a massless spring and placed over a plank moving with an acceleration ‘a’ as shown in figure. The coefficient of friction between the blocks and platform is .

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