Cengage NEET by C.P Singh
A rectangular block has a square base measuring a × a and its height is h. It moves on a horizontal surface in a direction perpendicular to one of the edges. The coefficient of friction is μ. It will topple if
23
Oct
A rectangular block has a square base measuring a × a and its height is h. It moves on a horizontal surface in a direction perpendicular to one of the edges. The coefficient of friction is μ. It will topple if If a ladder weighing 250 N is placed against a smooth vertical wall having [...]
A cyclist moves around a circular path of radius 40 3–√m with a speed of 20m/s. He must lean inwards at an angle θ with the vertical such that tanθ is equal to
23
Oct
A cyclist moves around a circular path of radius 40 3–√m with a speed of 20m/s. He must lean inwards at an angle θ with the vertical such that tanθ is equal to A cyclist moves around a circular path of radius 40 3–√m with a speed of 20m/s. He must lean inwards at an [...]
A ladder rests against a frictionless vertical wall, with its upper end 6m above the ground and the lower end 4m away from the wall. The weight of the ladder is 500N and its CG at 1/3rd distance from the lower end. Wall’s reaction will be (in newton)
23
Oct
A ladder rests against a frictionless vertical wall, with its upper end 6m above the ground and the lower end 4m away from the wall. The weight of the ladder is 500N and its CG at 1/3rd distance from the lower end. Wall’s reaction will be (in newton) A ladder rests against a frictionless vertical [...]
If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor?
23
Oct
If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor? If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction [...]
A uniform horizontal meter scale of mass m is suspended by two vertical strings attached to its two ends. A block of mass 3m is placed on the 60cm mark. The tensions in the two strings are in the ratio
23
Oct
A uniform horizontal meter scale of mass m is suspended by two vertical strings attached to its two ends. A block of mass 3m is placed on the 60cm mark. The tensions in the two strings are in the ratio The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then [...]
Two men p and q are carrying a uniform rod of length l on their shoulders the rod is held horizontally such that p get one-third load. If P is at one end of the rod the distance of Q from that end is
23
Oct
Two men p and q are carrying a uniform rod of length l on their shoulders the rod is held horizontally such that p get one-third load. If P is at one end of the rod the distance of Q from that end is Two men p and q are carrying a uniform rod of [...]
A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. Equal torques act on the discs A and B, initially both being at rest. At a later instant, the linear speeds of a point on the rim of A and another point on the rim of B are vA and vB, respectively. We have
23
Oct
A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. Equal torques act on the discs A and B, initially both being at rest. At a later instant, the linear speeds of [...]
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A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. Equal torques act on the discs A and B ,
initially both being at rest. At a later instant ,
respectively. We have ,
the linear speeds of a point on the rim of A and another point on the rim of B are vA and vB ,
In the figure (i) half of the meter scale is made of wood while the other half, of steel. The wooden part is pivoted at O. A force F is applied at the end of steel part. In figure (ii) the steel part is pivoted at O and the same force is applied at the wooden end
23
Oct
In the figure (i) half of the meter scale is made of wood while the other half, of steel. The wooden part is pivoted at O. A force F is applied at the end of steel part. In figure (ii) the steel part is pivoted at O and the same force is applied at the [...]
Two men support a uniform horizontal beam at its two ends, if one of them suddenly lets go, the force exerted by the beam on the other man will
23
Oct
Two men support a uniform horizontal beam at its two ends, if one of them suddenly lets go, the force exerted by the beam on the other man will if one of them suddenly lets go the force exerted by the beam on the other man will Two men support a uniform horizontal beam at [...]
A uniform rod of length l and mass m is free to rotate in a vertical plane about A as shown in Fig. The rod initially in horizontal position is released. The initial angular acceleration of the rod will be
23
Oct
A uniform rod of length l and mass m is free to rotate in a vertical plane about A as shown in Fig. The rod initially in horizontal position is released. The initial angular acceleration of the rod will be The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then [...]