A ladder AB is spported by a smooth vertical wall ad rough horizontal floor as shown. A boy tarts moving from A to B slowly. The ladder remains at rest, then pick up the correct statements (s):

A ladder 12units long slides in a vertical plane with its ends in contact with a vertical wall and a horizontal floor along x-axis.The locus of a point on the ladder 4 units from its foot has the equation:

A ladder of length 20 feet rests against a smooth vertical wall. The lowerend, which is on a smooth horizontal floor is moving away from the wall at the rate of 4 feet/sec. If the lower end is 12 feet away from the wall, then the rate at which the upper end move, is

A uniform ladder of length 3.25 m and weight 250 N is placed against a smooth vertical wall with its lower end 1.25 m from the wall. If coefficient of friction between the ladder and the floor is 0.3, then, find the frictional force acting on the ladder at the point of contact between ladder and floor.

Figure shows two identical blocks each of mass m kept on a smooth floor. Block A is connected to front wall with a just taut straight string and block B is connected to rear wall with a relaxed spring. Assume that the floor of the train car is smooth and exerts no horizontal forces on the blocks. Mark the correct statement(s).

A ladder 10 metres long rests with one end against a vertical wall, the other on the floor. The lower end moves away from the wall at the rate of 2 metres/minute. The rate at which the upper end falls when its base is 6 metres away from the wall

A small ball of mass 1kg is released from a smooth horizontal pipe containing a spring fixed at a height of 20m and 10m away from a vertical wall as shown in the figure. The initial compression of a spring is 2cm and it strikes a smooth vertical wall and smooth horizontal floor repeatedly and elastically as shown. The time period of one complete oscillation (g = 10m//s^(2)) . (The ball do not collide with walls of the pipe ) is P +(pi)/(50Q) , the value of Q -P is__________

A uniform quarter circular thin rod of mass M and radius R is pivoted at a point B on the floor. It can rotate freely in the vertical plane about B. It is supported by a smooth vertical wall at its other free end A so that it remains at rest. Find the reaction force of wall on the rod.

A uniform ladder of mass 10 kg leans against a smooth vertical wall making an angle of 53^0 with it. The other end rests on a rough horizontal floor. Find the normal force and the frictional force that the floor exerts on the ladder