Question

The adjacent diagram(Fig1.27) shows a heavy roller, with its axle at 0, which is to be raised on a pavement XY. If
there is friction between the roller and pavement, show by an arrow on
the diagram the point of application and the direction of force to be applied. If pivoted at 0, now will it go
up?
give answer i will mark as brainlest answer​

Answer 1

Answer:

roller will roll perpendicular to line XY rolling friction will act oppositely , force has to be applied tangent to roller along XY direction.

Answer 2

Explanation:

τ∝r

To get maximum torque and keeping force minimum, r should be maximum

Force F should be provided in the direction as shown in the diagram.