Choose the correct alternatives:
(a) For a general rotational motion, angular momentum L and angular velocity ω need not be parallel.
(b) For a rotational motion about a fixed axis, angular momentum L and angular velocity ω are always parallel.
(c) For a general translational motion , momentum p and velocity v are always parallel.
(d) For a general translational motion, acceleration a and velocity v are always parallel.
Choose the correct alternatives:
(a) For a general rotational motion, angular momentum L and angular velocity ω need not be parallel.
(b) For a rotational motion about a fixed axis, angular momentum L and angular velocity ω are always parallel.
(c) For a general translational motion , momentum p and velocity v are always parallel.
(d) For a general translational motion, acceleration a and velocity v are always parallel.
This is a multiple choice type question as classified in NCERT Exemplar
(a), (c) For general rotational motion where axis of rotation is not symmetric . angular momentum L and angular velocity w need not be parallel. For general translational motion momentum p=mv hence p and v are always parallel.
Similar Questions for you
Case – I : When disk slides down
Case – II : When disk rolls down
This is a multiple choice type question as classified in NCERT Exemplar
a, b, d
a) according to the perpendicular axes theorem statement 1 is wrong
b) As z’|z so distance between them = a
So according to parallel axes theorem Iz’=Iz+m (a/ )2= Iz+ma2/2
Hence b is true
c) z’ is not parallel to z hence Pa
This is a multiple choice type question as classified in NCERT Exemplar
b, c
a) When r>r’

Torque about z-axis t=r F
b) t’=r’ which is along negative z axis
c) tz=Fr = magnitude of torque about z axis where r is perpendicular between F and z axis so torque along positive z axis is greater than negative
This is a multiple choice type question as classified in NCERT Exemplar
a, b, c, d
As we know torque = r F = rFsin
a) when forces act radially angle =0 hence torque =0
b) when forces are acting on the axis of rotation r=0 torque=0
c) when forces acting parallel to the axis of rotation angle =0 so torq
This is a multiple choice type question as classified in NCERT Exemplar
(a), (b)As we know L= r p where r is position vector and p is the linear momentum . the direction of L is perpendicular to both r and p by right hand rule.
For particle 1
I1=r1 mv is out of the plane of the paper and perpendicu
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else.
On Shiksha, get access to
Learn more about...

Physics NCERT Exemplar Solutions Class 11th Chapter Seven 2025
View Exam DetailsMost viewed information
SummaryDidn't find the answer you were looking for?
Search from Shiksha's 1 lakh+ Topics
Ask Current Students, Alumni & our Experts
Have a question related to your career & education?
See what others like you are asking & answering


