The force which continuously deflects a particle from its straight line path and makes it travel along a circular path is called
Normal force
Gravitational force
Centripetal force
None of these
Centrifugal force is a
centripetal force
pseudo-force
shear force
none of these
Angular velocity of minute hand of a clock is
π/30 rad s-1
π rad s-1
2π rad s-1
π/1800 rad s-1
The angular velocity of second hand, of a clock is
(π/6) rads-1
(π/60) rads-1
(π/30) rads-1
(π/15) rads-1
A particle is moving in a circle of radius R with constant speed v. If radius is doubled, then its centripetal force to keep the same speed gets.
twice as great as before
half
one fourth
remains constant
A stone tied to one end of spring 80 cm long is whirled in a horizontal circle with a constant speed. If stone makes 25 revolutions in 14s, the magnitude of acceleration of stone is
850cms-2
996cms-2
720cms-2
650cms-2
Angular velocity of hour hand of a watch is
π / 43200 rad/s
π / 30 rad/s
π / 21600 rad/s
π / 1800 rad/s
A force directed away from centre is called
Centrifugal Force
A 500kg car takes a round turn of radius 50m with a velocity of 36 kmh-1. The centripetal force is
250 N
750 N
1000 N
1200 N
The angular velocity is represented as
Ө
t
Ѡ
