[" 42.Suppose the friction coefficient between the ground and "],[" the ladder of the previous problem is "0.540" .Find the "],[" maximum weight of a mechanic who could go up and do "],[" the work from the same position of the ladder."]

A heavy uniform metal chain is kept on the surface of a horizontal table. The coefficient of friction between the chain and the table surface is 0.02 . Find the maximum fraction of length of the chain that could hung over on one edge of the table ?

A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0m to from the wall. The ladder weighs 160 N . The coefficient of static friction between the foot of the ladder and the ground is 0.40 . A man weighing 740 N climbs slowly up the ladder. What is the maximum frictional force that the ground can exert on the ladder at its lower end?

A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0m to from the wall. The ladder weighs 160 N . The coefficient of static friction between the foot of the ladder and the ground is 0.40 . A man weighing 740 N climbs slowly up the ladder. What is the actual frictional force when the man has climbed 1.0 m along the ladder?

A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0m to from the wall. The ladder weighs 160 N . The coefficient of static friction between the foot of the ladder and the ground is 0.40 . A man weighing 740 N climbs slowly up the ladder. What is the actual frictional force when the man has climbed 1.0 m along the ladder?

A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0m to from the wall. The ladder weighs 160 N . The coefficient of static friction between the foot of the ladder and the ground is 0.40 . A man weighing 740 N climbs slowly up the ladder. How far along the ladder can the man climb before the ladder starts to slip?

A car is taking a turn of radius 400 m on a horizontal circle . Coefficient of friction between the ground and tyres of car is 0.2 . Find the maximum speed with a safe turn can be taken

A car is taking a turn of radius 400 m on a horizontal circle . Coefficient of friction between the ground and tyres of car is 0.2 . Find the maximum speed with a safe turn can be taken

In the figure shown, a solid sphere of mass 'm' and radius r is released from a height 6r to slide down a smooth surface. A plank of same mass 'm' touches the horizontal portion of the surface at the ground. The co-efficient of friction between the plank and the sphere is mu and that between the plank and the ground is mu//4 . Find the work done by the friction force between the plank and the ground till the sphere starts pure rolling on the plank. Neglect the height of the plank.