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_______________?
(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) 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
A body can have constant velocity when it follows a_____________?
(A) Elliptical path
(B) Circular path
(C) Parabolic path
(D) Rectilinear path
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?
(A) 4 rad. S-1
(B) 5 rad. S-1
(C) 1.6 ra
(D) S-1
In case of planets the necessary acceleration is provided by______________?
(A) Gravitational force
(B) Frictional force
(C) Coulomb force
(D) Centripetal force
The span of the broad jump depends upon_______________?
(A) Mass of the jumper
(B) Height of jump
(C) Angle of projection
(D) None
A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is______________?
(A) Maximum
(B) Zero
(C) Equal to the weight of the stone
(D) Less than the weight of the stone
When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?
(A) mV/r2
(B) mV/r
(C) mV2/r
(D) mV2/r2
Centripetal force performs_______________?
(A) Maximum work
(B) Minimum work
(C) Negative work
(D) No work