Physics-
General
Easy
Question
Two blocks of masses 2 kg and 1 kg are tied to the ends of a string which passes over a light frictionless pulley. The masses are held at rest at the same horizontal level and then released. The distance traversed by centre of mass in 2sec is
- 1.42 m
- 2.22 m
- 3.12 m
- 3.33 m
The correct answer is: 2.22 m
Related Questions to study
physics-
Three particles of equal masses are placed at the corners of an equilateral triangle, as shown in fig. Now particle A starts with a velocity 
towards line AB, particle B starts with a velocity 
towards line BC and particle C starts with velocity 
towards line CA. The displacement of C.M. of three particle A, B and C after time "t" will be (given if 
)
Three particles of equal masses are placed at the corners of an equilateral triangle, as shown in fig. Now particle A starts with a velocity towards line AB, particle B starts with a velocity towards line BC and particle C starts with velocity towards line CA. The displacement of C.M. of three particle A, B and C after time "t" will be (given if )
physics-General
physics-
A mass 
is rest on an inclined plane of mass M which is further resting on a smooth horizontal plane. Now, if the mass starts moving position of C.M. of mass of system will:
A mass is rest on an inclined plane of mass M which is further resting on a smooth horizontal plane. Now, if the mass starts moving position of C.M. of mass of system will:
physics-General
physics-
In a sphere of mass M and radius R, a part of radius R/2 is removed from it according to fig. Centre of mass shifts (x) towards negative x direction, then the value of x in terms of R is :
In a sphere of mass M and radius R, a part of radius R/2 is removed from it according to fig. Centre of mass shifts (x) towards negative x direction, then the value of x in terms of R is :
physics-General
physics-
A wire of uniform cross-section is bent in the shape shown in fig. The co-ordinates of the centre of mass of each side are shown in fig. The co-ordinates of the centre of mass of the system are
A wire of uniform cross-section is bent in the shape shown in fig. The co-ordinates of the centre of mass of each side are shown in fig. The co-ordinates of the centre of mass of the system are
physics-General
physics-
The figure shows a metallic plate of uniform thickness and density. The value of l in terms of L so that the centre of mass of the system lies at the interface of the triangular and rectangular portion is:
The figure shows a metallic plate of uniform thickness and density. The value of l in terms of L so that the centre of mass of the system lies at the interface of the triangular and rectangular portion is:
physics-General
physics-
Four particles, each of mass m, are placed at the corners of a square of side a shown in Fig. The position vector of the centre of mass is
Four particles, each of mass m, are placed at the corners of a square of side a shown in Fig. The position vector of the centre of mass is
physics-General
physics-
Three masses 2 kg,3 kg and 4 kg are lying at the corners of an equilateral triangle of side l. The (X) coordinates of centre of mass is :
Three masses 2 kg,3 kg and 4 kg are lying at the corners of an equilateral triangle of side l. The (X) coordinates of centre of mass is :
physics-General
physics-
Four cubes of side a each of mass 40 g,20 g,10 g and 20 g are arranged in XY plane as shown in the figure. The coordinates of centre of mass of the combination with respect to point O is
Four cubes of side a each of mass 40 g,20 g,10 g and 20 g are arranged in XY plane as shown in the figure. The coordinates of centre of mass of the combination with respect to point O is
physics-General
chemistry-
When zeolite is treated with hard water the sodium ions are exchanged with:
When zeolite is treated with hard water the sodium ions are exchanged with:
chemistry-General
chemistry-
Sodium zeolite is ........................
Sodium zeolite is ........................
chemistry-General
chemistry-
Which type of salt is mainly present in sea water?
Which type of salt is mainly present in sea water?
chemistry-General
chemistry-
For the given aqueous reaction which of the statement(s) is (are) true ?
For the given aqueous reaction which of the statement(s) is (are) true ?
chemistry-General
physics-
Consider the following diagram The incident ray parallel to the optical axis passing through
Consider the following diagram The incident ray parallel to the optical axis passing through
physics-General
physics-
A prism of refractive index 
is immersed in water of refractive index 
. For the total internal reflection the correct choice is
A prism of refractive index is immersed in water of refractive index . For the total internal reflection the correct choice is
physics-General
physics-
For a prism PQR the incident and emergent rays are parallel. The minimum value of refractive index of the prism material is
For a prism PQR the incident and emergent rays are parallel. The minimum value of refractive index of the prism material is
physics-General
