A person stands in contact against a wall of cylindrical drum of radius 'r' rotating with an angular velocity ` omega `. If `mu` is coefficient ofn static fiction between the wall and the person , then the minimum rotational speed which enables the person to remain struck to the wall will be

A person stands in contact against the inner surface of a cylindrical drum of radius (R ) rotating with angular velocity omega . The coefficient of friction between the inner surface of the minumum rotational speed of the cylinder , which enables the person to ramain stuck to the wall , when the platform on which the person was standing is suddenly removed ?

A 70kg man stands in contact against the inner wall of a hollw cylindrical drum of radius 3m rotating about its verticle axis. The coefficient of friction between the wall and his clothing nis 0.15 . What is the minimum rotational speed of the cylinder to enable the man to remain stuck to the wall (without falling) when the floor is suddenly removed?

A 90 kg man is standing in contact with the wall of a cylindrical drum of radius 2 m. The drum is rotating about its vertical axis with an angular speed of 100 rpm. Calculate the minimum rotational speed of the cylinder to enable the man to remain stuck to the wall when the floor is suddenly removed. The coefficient of friction between wall and clothing is 0.1.

A person stands in contact against the inner wall of a rotor of radius r. The coefficient of friction between the wall and the clothing is mu and the rotor is rotating about vertical axis. The minimum angular speed of the rotor so that the person does not slip downward is

IN a rotor, a hollow verticla cylindrical structure rotates about its axis and a person rests asgainst he inner wall. At a particular speed of the rotor, the floor below the person is removed and the person hangs resting against the wall without any floor. If the radius of the roter is 2m and the coefficient of static frictioin between the wall and theperson is 0.2, find the minimum speed at which the floor may be removed Take g=10 m/s^2 .

A hollow vertical cylinder of radius R is rotated with angular velocity omega about an axis through its centre. What is the minimum coefficient of static friction between block M and cylinder wall necessary to keep the block suspended on the inside of the cylinder ?

A ring of radius R is first rotated with an angular velocity omega and then carefully placed on a rough horizontal surface. The coefficient of friction between the surface and the ring is mu . Time after which its angular speed is reduced to half is

A block of mass 10 kg in contact against the inner wall of a hollow cylindrical drum of radius 1m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be (g=10 m//s^(2))