One Point Solution for All JKSSB Exams

MCQs

Classical Mechanics Questions with solutions MCQs

1. Choose the incorrect statement :

If total linear momentum of a system of particles is zero, the angular momentum of the system is the same around all origins

Even if total linear momentum of a system of particles is not zero, the angular momentum of the system is same around all origins

If the total force on a system of particles is zero, the torque on the system is the same around all origins

When a rigid body rotates around an axis, every particle in the body remains at a fixed distance from the axis

Classical Mechanics KU Physics 2021

Correct Answer : B
Explanation :

Correct Answered :

Wrong Answered :

2. If F is the time-dependent force F = A – Bt, where A and B are positive constants, the velocity v(t) in terms of A, B, m (mass), v0 (initial velocity) and x0 (initial position) is given by :

v(t) = v0 + At /m – B t2 /2m

v(t) = v0 + At2 /m – B t/2m

v(t) = v0 + B t2 /2m

v(t) = v0 – B t2 /2m

Classical Mechanics KU Physics 2021

Correct Answer : A
Explanation :

Correct Answered :

Wrong Answered :

3. How far approximately will a small boat move, when a man with mass 64 kg moves from back to front of the boat ? Given that length of boat is 2.7 m, its mass is 92 kg. (Water resistance and tilt of the boat is negligible)

1.03 m

1.40 m

2.74 m

1.10 m

Classical Mechanics KU Physics 2021

Correct Answer : D
Explanation :

center of mass will remain at same point

Correct Answered :

Wrong Answered :

4. A particle moves in a circular orbit with the potential energy U(r) = –A/r^n , where A > 0. For what values of ‘n’ are the circular orbits stable :

n > 2

n <= 2

Only for n = 2

Only for n = 1

Classical Mechanics KU Physics 2021

Correct Answer : B
Explanation :

Correct Answered :

Wrong Answered :

5.
A particle of mass ‘m’ is located in the y-z plane at x = 0, y = 3, z =3. Its moment and products of inertia relative to the origin written in the form of an Inertia matrix are :

Classical Mechanics KU Physics 2021

Correct Answer : A
Explanation :

Correct Answered :

Wrong Answered :

6. A marble of mass 0.1 kg and radius 0.25 m is rolled up a plane of angle 30 degree . If the initial velocity of the marble is 2 m/s, the distance ‘d’ it travels up the plane before it begins to roll back down is equal to :

4 m

4/5 m

4/7 m

4/9 m

Classical Mechanics KU Physics 2021

Correct Answer : C
Explanation :

Correct Answered :

Wrong Answered :

7. A thin sheet of mass M is in the shape of an equilateral triangle with side L. The moment of inertia around an axis through a vertex, perpendicular to the sheet is :

5/7 ML^2

5/12 ML^2

5/9 ML^2

1/2 ML^2

Classical Mechanics KU Physics 2021

Correct Answer : B
Explanation :

Correct Answered :

Wrong Answered :

8.
If a force F is derivable from a potential function V(r),
where r is the distance from the origin of the coordinate
system, it follows that :

∇ × F = 0

∇· F = 0

∇V=0

∇^2 V=0

Classical Mechanics KU Physics 2021

Correct Answer : A
Explanation :

Correct Answered :

Wrong Answered :

MCQs

Classical Mechanics Questions with solutions MCQs

1. Choose the incorrect statement :

2. If F is the time-dependent force F = A – Bt, where A and B are positive constants, the velocity v(t) in terms of A, B, m (mass), v0 (initial velocity) and x0 (initial position) is given by :

3. How far approximately will a small boat move, when a man with mass 64 kg moves from back to front of the boat ? Given that length of boat is 2.7 m, its mass is 92 kg. (Water resistance and tilt of the boat is negligible)

4. A particle moves in a circular orbit with the potential energy U(r) = –A/r^n , where A > 0. For what values of ‘n’ are the circular orbits stable :

5.
A particle of mass ‘m’ is located in the y-z plane at x = 0, y = 3, z =3. Its moment and products of inertia relative to the origin written in the form of an Inertia matrix are :

6. A marble of mass 0.1 kg and radius 0.25 m is rolled up a plane of angle 30 degree . If the initial velocity of the marble is 2 m/s, the distance ‘d’ it travels up the plane before it begins to roll back down is equal to :

7. A thin sheet of mass M is in the shape of an equilateral triangle with side L. The moment of inertia around an axis through a vertex, perpendicular to the sheet is :

8.
If a force F is derivable from a potential function V(r),
where r is the distance from the origin of the coordinate
system, it follows that :

CONTACT US

QUICK LINKS

LIKE AND SHARE YOUR EXPERIENCE

MCQs

Classical Mechanics Questions with solutions MCQs

1. Choose the incorrect statement :

2. If F is the time-dependent force F = A – Bt, where A and B are positive constants, the velocity v(t) in terms of A, B, m (mass), v0 (initial velocity) and x0 (initial position) is given by :

3. How far approximately will a small boat move, when a man with mass 64 kg moves from back to front of the boat ? Given that length of boat is 2.7 m, its mass is 92 kg. (Water resistance and tilt of the boat is negligible)

4. A particle moves in a circular orbit with the potential energy U(r) = –A/r^n , where A > 0. For what values of ‘n’ are the circular orbits stable :

5. A particle of mass ‘m’ is located in the y-z plane at x = 0, y = 3, z =3. Its moment and products of inertia relative to the origin written in the form of an Inertia matrix are :

6. A marble of mass 0.1 kg and radius 0.25 m is rolled up a plane of angle 30 degree . If the initial velocity of the marble is 2 m/s, the distance ‘d’ it travels up the plane before it begins to roll back down is equal to :

7. A thin sheet of mass M is in the shape of an equilateral triangle with side L. The moment of inertia around an axis through a vertex, perpendicular to the sheet is :

8. If a force F is derivable from a potential function V(r),where r is the distance from the origin of the coordinatesystem, it follows that :

CONTACT US

QUICK LINKS

LIKE AND SHARE YOUR EXPERIENCE

5.
A particle of mass ‘m’ is located in the y-z plane at x = 0, y = 3, z =3. Its moment and products of inertia relative to the origin written in the form of an Inertia matrix are :

8.
If a force F is derivable from a potential function V(r),
where r is the distance from the origin of the coordinate
system, it follows that :