The ladder shown in figure has negligible mass and rests on a frictionless floor. The crossbar connects the two legs of the ladder at the middle. The angle between the two legs is `60^0`. The fat person sitting on the ladder has a mas of 80 kg. Find the contact force exerted by the floor on each leg and the tension in the cross bar.

A 3m long ladder weighing 20 kg leans on a frictionless wall. Its feet rest on the floor 1 m from the wall as shown in Fig.7.27. Find the reaction forces of the wall and the floor.

A 3m long ladder weighing 20 kg leans on a frictionless wall. Its feet rest on the floor 1 m from the wall as shown in Fig.7.27. Find the reaction forces of the wall and the floor.

A 3m long ladder weighing 20 kg leans on a frictionless wall. Its feet rest on the floor 1 m from the wall as shown in Fig.7.27. Find the reaction forces of the wall and the floor.

Figure 5-50 shows two blocks connected by a cord (of negligible mass) that passes over a frictionless pulley (also of negligible mass). The arrangement is known as Atwood's machine. One block has mass m_(1)=1.30 kg, the other has mass m_(2)=2.80 kg. What are (a) the magnitude of the blocks' acceleration and (b) the tension in the cord ?

A rubber ball of mass 0 *4 kg hits the ground at same angle without any change in speed . If the speed of ball is 1 m/s and the period of contact between the ball and floor is 0*4 s, find the average force exerted by the ball on the ground .

A 3 m long ladder weighing 20 kg leans on a frictionless wall. Its feet rest on the floor 1 m from the wall as shown in the following figure, Find the reaction forces of the wall and the floor.