Physics
General
Easy
Question
The radius of the earth is 6400 km and g=
. In order that a body of 5 kg weights zero at the equator, the angular speed of the earth is =……rad/sec
- 1/80
- 1/400
- 1/800
- 1/600
The correct answer is: 1/800
Related Questions to study
physics-
A transverse wave is represented by 
. For what value of its wavelength will the wave velocity be equal to the maximum velocity of the particle taking part in the wave propagation?
A transverse wave is represented by . For what value of its wavelength will the wave velocity be equal to the maximum velocity of the particle taking part in the wave propagation?
physics-General
physics
If R is the radius of the earth and g the acceleration due to gravity on the earth's surface, the mean density of the earth is =……
If R is the radius of the earth and g the acceleration due to gravity on the earth's surface, the mean density of the earth is =……
physicsGeneral
physics-
If. two almost identical waves having frequencies 
and 
produced one after the other superposes then the time interval to obtain a beat of maxirmum intensity is .......
If. two almost identical waves having frequencies and produced one after the other superposes then the time interval to obtain a beat of maxirmum intensity is .......
physics-General
physics-
As shown in figure, two pulses in a string having center to center distance of 8 cm are travelling abng mutually opposite direction. If the speed of both the pulse is 
s, then after 2s, the energy of these pulses will be…………
As shown in figure, two pulses in a string having center to center distance of 8 cm are travelling abng mutually opposite direction. If the speed of both the pulse is s, then after 2s, the energy of these pulses will be…………
physics-General
physics
As we go from the equator to the poles, the value of g…..
As we go from the equator to the poles, the value of g…..
physicsGeneral
physics
The gravitational force between two point masses 
and 
at separation r is given by F=
The constant K…..
The gravitational force between two point masses and at separation r is given by F= The constant K…..
physicsGeneral
physics
Two point masses A and B having masses in the ratio 4:3 are seprated by a distance of 1m. When another point mass c of mass M is placed in between A and B the forces A and C is 1/3rd of the force between b and C, Then the distance C form is...m
Two point masses A and B having masses in the ratio 4:3 are seprated by a distance of 1m. When another point mass c of mass M is placed in between A and B the forces A and C is 1/3rd of the force between b and C, Then the distance C form is...m
physicsGeneral
physics
Which of the following statement about the gravitational constant is true
Which of the following statement about the gravitational constant is true
physicsGeneral
physics
Three equal masses of mkg each are plced the vertices of an equilateral triangle PQR and a mass of 2 m kg is placed at the centroid 0 of the triangle which is at a distance of m from each of vertices of triangle. The force in newton. acting on the mass 2 m is …….
Three equal masses of mkg each are plced the vertices of an equilateral triangle PQR and a mass of 2 m kg is placed at the centroid 0 of the triangle which is at a distance of m from each of vertices of triangle. The force in newton. acting on the mass 2 m is …….
physicsGeneral
biology
Match the column
Match the column
biologyGeneral
physics-
As shown in figure, a block A having mass M is attached to one end of a massless spring. The block is on a frictionless horizontal surface and the free end of the spring is attached to a wall. Another block B having mass ' 
' is placed on top of blockA. Now on displacing this system horizontally and released, it executes S.H.M. What should be the maximum amplitude of oscillation so that B does not slide off A? Coefficient of static friction between the surfaces of the block's is 
.
As shown in figure, a block A having mass M is attached to one end of a massless spring. The block is on a frictionless horizontal surface and the free end of the spring is attached to a wall. Another block B having mass ' ' is placed on top of blockA. Now on displacing this system horizontally and released, it executes S.H.M. What should be the maximum amplitude of oscillation so that B does not slide off A? Coefficient of static friction between the surfaces of the block's is .
physics-General
physics-
The displacement of a particle is given by 
Which of the following graph represents variation in potential energy as a fimction of tims 
and displacement 
.
The displacement of a particle is given by Which of the following graph represents variation in potential energy as a fimction of tims and displacement .
physics-General
physics-
Two blocks 
and 
are attached to the two ends of a spring having leagth 
and force consiant 
on a horizontal surface. Initially the systen is in equilhium. Now a third block having same mass , moving with velocity 
collides with block A. Ln this situation........
Two blocks and are attached to the two ends of a spring having leagth and force consiant on a horizontal surface. Initially the systen is in equilhium. Now a third block having same mass , moving with velocity collides with block A. Ln this situation........
physics-General
physics
One can easily " Weight the earth " by calculating the mass of earth using the formula. (in usual notation)
One can easily " Weight the earth " by calculating the mass of earth using the formula. (in usual notation)
physicsGeneral
physics-
Two identical springs are attached at the opposite ends of a rod having length 
and mass . The rod could rotate about its mid-point O as shown in figure. Now, if the point of the rod is pressed slightly and released, the rod starts executing oscillatory motion. The periodic time of this motion is………
Two identical springs are attached at the opposite ends of a rod having length and mass . The rod could rotate about its mid-point O as shown in figure. Now, if the point of the rod is pressed slightly and released, the rod starts executing oscillatory motion. The periodic time of this motion is………
physics-General
