What will be the duration of day and night if the earth shrinks to half the present radius?
A.24 hours
B.12 hours
C.6 hours
D.3 hours
A.24 hours
B.12 hours
C.6 hours
D.3 hours
A.Minimum when it acts at C.G. of the body
B.Maximum when it acts at C.G. of the body
C.Different at different points of body
D.Same at every point in its line of action
E.None of the above
A.48.300 ft
B.56,900 ft
C.65,800 ft
D.75,000 ft
A.1.0 m/s2
B.1.5 m/s2
C.3 m/s2
D.6 m/s2
A.The algebraic sum of horizontal components of all forces must be zero
B.The algebraic sum of vertical components of all forces must be zero
C.The algebraic sum of forces about a point must be zero
D.All the above
E.None of the above
A.jumps out from that platform
B.moves towards the axis of rotation
C.extends his arms outwards
D.take out his coat and throws away
A.10 rev/min2
B.15 rev/min2
C.20 rev/min2
D.30 rev/min2
A.angular velocity
B.centripetal acceleration
C.tangential acceleration
D.all of the above
A.One erg
B.100 ergs
C.one watt
D.one Newton
E.one joule