Physics-
General
Easy
Question
A particle is tied to 
long string. It performs circular motion in vertical plane. What is the angular velocity of the string when the tension in the string at the top is zero
The correct answer is:
Related Questions to study
Physics-
An aeroplane is flying at a constant horizontal velocity of 
at an elevation of 
towards a point directly above the target on the earth’s surface. At an appropriate time, the pilot releases a ball so that it strikes the target at the earth. The ball will appear to be falling
An aeroplane is flying at a constant horizontal velocity of at an elevation of towards a point directly above the target on the earth’s surface. At an appropriate time, the pilot releases a ball so that it strikes the target at the earth. The ball will appear to be falling
Physics-General
Physics-
The maximum speed with which a car is driven round a curve of radius 18 m without skidding (where, 
and the coefficient of friction between rubber tyres and the roadway is 0.2) is
The maximum speed with which a car is driven round a curve of radius 18 m without skidding (where, and the coefficient of friction between rubber tyres and the roadway is 0.2) is
Physics-General
Physics-
Three balls are dropped from the top of a building with equal speed at different angles. When the balls strike ground their velocities are 
and 
respectively, then
Three balls are dropped from the top of a building with equal speed at different angles. When the balls strike ground their velocities are and respectively, thenPhysics-General
Physics-General
Physics-
A small disc is on the top of a hemisphere of radius 
. What is the smallest horizontal velocity 
that should be given to the disc for it to leave the hemisphere and not slide down it? [There is no friction]
A small disc is on the top of a hemisphere of radius . What is the smallest horizontal velocity that should be given to the disc for it to leave the hemisphere and not slide down it? [There is no friction]
Physics-General
Physics-
The minimum velocity 
with which a car driver must traverse a flat curve of radius of 150 m and coefficient of friction 0.6 to avoid skidding is
The minimum velocity with which a car driver must traverse a flat curve of radius of 150 m and coefficient of friction 0.6 to avoid skidding is
Physics-General
Physics-
A child travelling in a train throws a ball outside with a speed 
. According to a child who is standing on the ground, the speed of the ball is
A child travelling in a train throws a ball outside with a speed . According to a child who is standing on the ground, the speed of the ball is
Physics-General
Maths-
If the points with position vectors 
and 
are collinear, then is equal to
If the points with position vectors and are collinear, then is equal to
Maths-General
Maths-
× 
+ 
× 
+ 
× 
is equal to
× + × + × is equal to
Maths-General
Maths-
If 
= 6 
= 8, 
= 10, then 
is equal to
If = 6 = 8, = 10, then is equal to
Maths-General
Maths-
Projection of the vector 
= 
+ 
– 
on the vector 
= + 
+ 
is
Projection of the vector = + – on the vector = + + is
Maths-General
Maths-
If = (1, 1) and = (–2, m) are collinear vectors, then m =
If = (1, 1) and = (–2, m) are collinear vectors, then m =
Maths-General
Maths-
ABCD is a quadrilateral such that 
, 
& 
. The area of quadrilateral ABCD is –
ABCD is a quadrilateral such that , & . The area of quadrilateral ABCD is –
Maths-General
Maths-
The distance of the point B with position vector 
from the line passing through the point A with position vector 
& parallel to vector 
is –
The distance of the point B with position vector from the line passing through the point A with position vector & parallel to vector is –
Maths-General
Maths-
The projection of the vector 
on the vector 
is
The projection of the vector on the vector is
Maths-General
Maths-
If (2
+ P
+ 2
) is perpendicular to 
then value of P is
If (2 + P + 2) is perpendicular to then value of P is
Maths-General
