hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?
WA. 180°
B. 0°
C. 90°
D. 45°
Circular Motion
The direction of the linear velocity of a body moving in a circle is______________?
The direction of the linear velocity of a body moving in a circle is______________?
A. along the axis of rotation
B. along the tangent
C. directed towards the centre
D. directed away from the centre
The period of a circular motion is given by_______________?
The period of a circular motion is given by_______________?
A. T = πv
B. T = πw
C. T = 2πr
D. T = 2πr/v
One radian is equal to______________?
One radian is equal to______________?
A. 67.3°
B. 57.3°
C. 87.3°
D. 60°
According to Einstein, the gravitational interaction is possible between_______________?
According to Einstein, the gravitational interaction is possible between_______________?
A. material objects only
B. material objects and electromagnetic radiation only
C. electromagnetic radiations
D. none of the above
The radius of geostationary orbit from the centre of the earth is nearly______________?
The radius of geostationary orbit from the centre of the earth is nearly______________?
A. 42000km
B. 36000km
C. 24000 km
D. 18000 km
Geostationary satellite completes one rotation around the earth in_______________?
Geostationary satellite completes one rotation around the earth in_______________?
A. 3 hours
B. 6 hours
C. 12 hours
D. 24 hours
The critical speed of an artificial satellite is_______________?
The critical speed of an artificial satellite is_______________?
A. 8 Kms-1
B. 8.1 Kms-1
C. 7.9 Kms-1
D. 8 ms-1
A hoop and disc have same mass and radius. Their rotational K.E are related by an equation______________?
A hoop and disc have same mass and radius. Their rotational K.E are related by an equation______________?
A. K.E hoop = K.E disc
B. K.E hoop = 2K.E disc
C. K.E hoop = 1/2K.E disc
D. K.E hoop = 4K.E disc
The rotational K.E of the hoop is equal to the______________?
The rotational K.E of the hoop is equal to the______________?
A. its translational K.E
B. half than its translational K.E
C. double than its translational K.E
D. four times than its translational K.E