Physics-
General
Easy
Question
A particle of mass m is going along surface of smooth hemisphere of radius R. At the moment shown its speed is v Choose correct option.
- None of these
The correct answer is:
Related Questions to study
Physics-
In the figure shown the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position =5mg/K and released at t=0. Find the velocity of ‘m’ when normaldby a distance reaction on 3m is mg.
In the figure shown the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position =5mg/K and released at t=0. Find the velocity of ‘m’ when normaldby a distance reaction on 3m is mg.
Physics-General
Physics-
Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be
Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be
Physics-General
Physics-
A body with mass 2 kg moves in one direction in the presence of a force which is described by the potential energy graph. If the body is released from rest at x = 2m, then its speed when it crosses x = 5 m is
A body with mass 2 kg moves in one direction in the presence of a force which is described by the potential energy graph. If the body is released from rest at x = 2m, then its speed when it crosses x = 5 m is
Physics-General
Physics-
A particle is to move along the x-axis from x = 0 to x = x1 while a conservative force, directed along the x-axis, acts on the particle. For each force definition presented in the figures the maximum magnitude of the force (F1) is the same for all cases. Rank the forces according to the change in potential energy associated with the motion shown, from most positive to most negative:
a) 
b) 
c) 
A particle is to move along the x-axis from x = 0 to x = x1 while a conservative force, directed along the x-axis, acts on the particle. For each force definition presented in the figures the maximum magnitude of the force (F1) is the same for all cases. Rank the forces according to the change in potential energy associated with the motion shown, from most positive to most negative:
a)
b)
c)
Physics-General
Physics-
Consider the configuration (shown below) of a rope that is half hanging over the edge of a frictionless table. Suppose the rope has a mass per kg/m. How much work is done by a force that slowly unit length of pulls the entire rope up onto the table? Select the correct answer.
Consider the configuration (shown below) of a rope that is half hanging over the edge of a frictionless table. Suppose the rope has a mass per kg/m. How much work is done by a force that slowly unit length of pulls the entire rope up onto the table? Select the correct answer.
Physics-General
Physics-
A ball of mass ‘m’ is rotating in a circle of radius ‘r’ with speed v inside a smooth cone as shown in figure. Let N be the normal reaction on the ball by the cone, then choose the wrong option. =
A ball of mass ‘m’ is rotating in a circle of radius ‘r’ with speed v inside a smooth cone as shown in figure. Let N be the normal reaction on the ball by the cone, then choose the wrong option. =
Physics-General
Maths-
Statement-I : The points with position vectors 
are collinear if 2
= 0
Statement II : The points with position vectors 
are collinear if 
Statement-I : The points with position vectors are collinear if 2 = 0
Statement II : The points with position vectors are collinear if
Maths-General
Maths-
The set of values of m for which the vectors 
are coplanar is
The set of values of m for which the vectors are coplanar is
Maths-General
Maths-
If a vector 
of magnitude 50 is collinear with vector 
and makes an acute angle with positive z-axis then
If a vector of magnitude 50 is collinear with vector and makes an acute angle with positive z-axis then
Maths-General
Maths-
Three non zero non-collinear vectors are such that 
is collinear with 
while 
is collinear with . Then 
Three non zero non-collinear vectors are such that is collinear with while is collinear with . Then
Maths-General
Maths-
P is the point of intersection of the diagonals of the parallelogram ABCD. If S is any point in the space and 
then 
=
P is the point of intersection of the diagonals of the parallelogram ABCD. If S is any point in the space and then =
Maths-General
Maths-
Two sides of a parallelogram are given by 2i+4j-2k and i+2j then lengths of diagonals are
Two sides of a parallelogram are given by 2i+4j-2k and i+2j then lengths of diagonals are
Maths-General
Maths-
Equation to a line parallel to the vector 2i-j+k and passing through the point i+j+k
Equation to a line parallel to the vector 2i-j+k and passing through the point i+j+k
Maths-General
Physics-
A particle parallel to x-axis as shown in the figure such that at all instant the y-axis component of it's position vector is constant and is equal to 'b'. The angular velocity of the particle about the origin is
A particle parallel to x-axis as shown in the figure such that at all instant the y-axis component of it's position vector is constant and is equal to 'b'. The angular velocity of the particle about the origin is
Physics-General
Physics-
A container is filled with water at 4°C. At one time the temperature is increased by few degrees above 4°C and at another time it is decreased by few degrees below 4°C. One shall observe that:
A container is filled with water at 4°C. At one time the temperature is increased by few degrees above 4°C and at another time it is decreased by few degrees below 4°C. One shall observe that:
Physics-General
