Cengage JEE Mains Physics by B.M Sharma
Three children are sitting on a see-saw in such a way that it is balanced. A 20kg and a 30kg boy are on opposite sides at a distance of 2m from the pivot. If the third boy jumps off, thereby destroying balance, then the initial angular acceleration of the board is: (Neglect weight of board)
27
Nov
Three children are sitting on a see-saw in such a way that it is balanced. A 20kg and a 30kg boy are on opposite sides at a distance of 2m from the pivot. If the third boy jumps off, thereby destroying balance, then the initial angular acceleration of the board is: (Neglect weight of board) [...]
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then the initial angular acceleration of the board is: (Neglect weight of board) ,
thereby destroying balance ,
Three children are sitting on a see-saw in such a way that it is balanced. A 20kg and a 30kg boy are on opposite sides at a distance of 2m from the pivot. If the third boy jumps off ,
A triangular plate of uniform thickness and density is made to rotate about an axis perpendicular to the plane of the paper (a) passing through A, (b) passing through B, by the application of the same force F, at C (mid-point of AB) as shown. Now,
27
Nov
A triangular plate of uniform thickness and density is made to rotate about an axis perpendicular to the plane of the paper (a) passing through A, (b) passing through B, by the application of the same force F, at C (mid-point of AB) as shown. Now, (b) passing through B A triangular plate of uniform [...]
A rectangular block of mass M and height a is resting on a smooth level surface. A force F is applied to one corner as shown in figure. At what point should a parallel force 3F be applied in order that the block shall undergo pure translational motion? Assume normal contact force between the block and surface passes through the centre of gravity of the block.
27
Nov
A rectangular block of mass M and height a is resting on a smooth level surface. A force F is applied to one corner as shown in figure. At what point should a parallel force 3F be applied in order that the block shall undergo pure translational motion? Assume normal contact force between the block [...]
A cord is wrapped on a pulley (disk) of mass M and radius R as shown in fig. To one end of the cord, a block of mass M is connected as shown and to other end in (a) a force of 2 Mg and in (b) a block of mass 2M. Let angular acceleration of the disk in A and B is α2 and αB , respectively, then: (cord is not slipping on the pulley)
27
Nov
A cord is wrapped on a pulley (disk) of mass M and radius R as shown in fig. To one end of the cord, a block of mass M is connected as shown and to other end in (a) a force of 2 Mg and in (b) a block of mass 2M. Let angular acceleration [...]
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a block of mass M is connected as shown and to other end in (a) a force of 2 Mg and in (b) a block of mass 2M. Let angular acceleration of the disk in A and B is α2 and αB ,
A cord is wrapped on a pulley (disk) of mass M and radius R as shown in fig. To one end of the cord ,
respectively ,
then :(cord is not slipping on the pulley) ,
In the pulley system shown, if radii of the bigger and smaller pulley are 2 m and 1 m, respectively and the acceleration of block A is 5 m/s^−2 in the downward direction, the acceleration of block B will be :
27
Nov
In the pulley system shown, if radii of the bigger and smaller pulley are 2 m and 1 m, respectively and the acceleration of block A is 5 m/s^−2 in the downward direction, the acceleration of block B will be : if radii of the bigger and smaller pulley are 2 m and 1 m [...]
A cube of side a is placed on an inclined plane of inclination θ. What is the maximum value of θ for which the cube will not topple?
27
Nov
A cube of side a is placed on an inclined plane of inclination θ. What is the maximum value of θ for which the cube will not topple? A cube of side a is placed on an inclined plane of inclination θ. What is the maximum value of θ for which the cube will not [...]
The pulley in figure are identical, each having a radius R and moment of inertia I. Find the acceleration of the block is.
27
Nov
The pulley in figure are identical, each having a radius R and moment of inertia I. Find the acceleration of the block is. each having a radius R and moment of inertia I. Find the acceleration of the block is. The pulley in figure are identical November 27, 2020 Category: Cengage JEE Mains Physics by [...]
A cube of side a and mass m is to be tilted at a point A by applying a force F as shown in the figure. The minimum force required is
27
Nov
A cube of side a and mass m is to be tilted at a point A by applying a force F as shown in the figure. The minimum force required is A cube of side a and mass m is to be tilted at a point A by applying a force F as shown in [...]
A thin rod of length 4l, mass 4m is bent at the points as shown in figure. What is the moment of inertia of the rod about the axis passing point O and perpendicular to the plane of the paper?
27
Nov
A thin rod of length 4l, mass 4m is bent at the points as shown in figure. What is the moment of inertia of the rod about the axis passing point O and perpendicular to the plane of the paper? A thin rod of length 4l mass 4m is bent at the points as shown [...]
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure. Find the value of unknown mass m
27
Nov
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure. Find the value of unknown mass m In an experiment with a beam balance on unknown mass m is balanced by [...]