science
Grade8
Easy
Question
An object performing a uniform circular motion is under the action of _____.
- Balanced forces
- Unbalanced forces
- Both balanced and unbalanced forces
- None of the above
Hint:
An object performing a uniform circular motion is under the action of unbalanced forces.
The correct answer is: Unbalanced forces
Related Questions to study
science
In which direction does the velocity of a body moving in a circular motion point?
In which direction does the velocity of a body moving in a circular motion point?
scienceGrade8
science
What is the direction of the gravitational force of the Earth?
What is the direction of the gravitational force of the Earth?
scienceGrade8
science
A ball is tied to a string and is swirled around in a circular path. What would happen if the string broke accidentally?
(a) The ball keeps moving in the circular path
(b) It directly falls towards the ground
(c) The centripetal force is withdrawn
(d) It flies away in a tangential direction.
A ball is tied to a string and is swirled around in a circular path. What would happen if the string broke accidentally?
(a) The ball keeps moving in the circular path
(b) It directly falls towards the ground
(c) The centripetal force is withdrawn
(d) It flies away in a tangential direction.
scienceGrade8
science
Circular motion ______.
Circular motion ______.
scienceGrade8
science
What is the direction of the centripetal acceleration w.r.t the centripetal force?
What is the direction of the centripetal acceleration w.r.t the centripetal force?
scienceGrade8
science
What provides the necessary centripetal force to the Earth so that it keeps revolving around the sun in the same orbit?
What provides the necessary centripetal force to the Earth so that it keeps revolving around the sun in the same orbit?
scienceGrade8
science
A stone tied to a string was swirled so that it moves in a circular path in a horizontal plane. What supplies the necessary centripetal force to keep it moving in the same circular path?
A stone tied to a string was swirled so that it moves in a circular path in a horizontal plane. What supplies the necessary centripetal force to keep it moving in the same circular path?
scienceGrade8
science
Which force is necessary to keep a body moving in a circular path?
Which force is necessary to keep a body moving in a circular path?
scienceGrade8
science
A ball that is thrown up travels a certain distance upwards and falls back to the ground. The gravitational pull acts on it ______.
A ball that is thrown up travels a certain distance upwards and falls back to the ground. The gravitational pull acts on it ______.
scienceGrade8
Physics
A spherical uniform planet is rotating about its axis. The velocity of a point on its equator is v. Due to rotation of planet about its axis the acceleration due to gravity g at equator of g at poles. The escape velocity of a particle on the pole of planet in terms of :
A spherical uniform planet is rotating about its axis. The velocity of a point on its equator is v. Due to rotation of planet about its axis the acceleration due to gravity g at equator of g at poles. The escape velocity of a particle on the pole of planet in terms of :
PhysicsMechanics
Physics
Two satellites and are revolving around the earth in coplanar concentric orbits in the opposite sense. At t = 0, the positions of satellites are shown in the diagram. The period of and
are 4 h and 24 h, respectively. The radius of orbit of is . For this situation mark the correct statement(s)
Two satellites and are revolving around the earth in coplanar concentric orbits in the opposite sense. At t = 0, the positions of satellites are shown in the diagram. The period of and
are 4 h and 24 h, respectively. The radius of orbit of is . For this situation mark the correct statement(s)
PhysicsMechanics
Physics
A double star consists of two stars having masses M and 2M . The distance between their centres is equal to r . They revolve under their mutual gravitational interaction. Then, which of the following statements are not correct?
A double star consists of two stars having masses M and 2M . The distance between their centres is equal to r . They revolve under their mutual gravitational interaction. Then, which of the following statements are not correct?
PhysicsMechanics
Physics
A solid sphere of uniform density and radius 4 units is located with its centre at the origin O of coordinates. Two spheres of equal radii 1 unit, with their centres at A (-2,0,0) and B(2,0, 0) respectively, are taken out of the solid leaving behind spherical carvities as shown in the figure., Then
A solid sphere of uniform density and radius 4 units is located with its centre at the origin O of coordinates. Two spheres of equal radii 1 unit, with their centres at A (-2,0,0) and B(2,0, 0) respectively, are taken out of the solid leaving behind spherical carvities as shown in the figure., Then
PhysicsMechanics
Physics
A tunnel is dug along a chord of the earth at a perpendicular distance R / 2 from the earth's centre. The wall of the tunnel may be assumed to be frictionless. A particle is released from one end of the tunnel. The pressing force by the particle on the wall, and the acceleration of the particle vary with x (distance of the particle from the centre of earth ) according to
A tunnel is dug along a chord of the earth at a perpendicular distance R / 2 from the earth's centre. The wall of the tunnel may be assumed to be frictionless. A particle is released from one end of the tunnel. The pressing force by the particle on the wall, and the acceleration of the particle vary with x (distance of the particle from the centre of earth ) according to
PhysicsMechanics
Physics
Figure shows the kinetic energy and potential energy curves for a two-particle system. Name the point at which the system is bound.
Figure shows the kinetic energy and potential energy curves for a two-particle system. Name the point at which the system is bound.
PhysicsMechanics