Mechanics MCQs Deal with Surface Mass Density Is Defined As, A Damping Force Is Given By, Amplitude Becomes Very Large In, The Path Traced By A 2-Dimensional Oscillator Is, In Central Force Field, Force Is In Direction Of, Analytical Condition For A Point P Is Apse, An Object Which Emits Its Own Light, Which Of The Following Is A Natural Satellite, Quantity Of Matter In An Object Is Called, ∫Fdt Is Called, Which Of The Following Is A Non Conservative Force, Apsidal Distance Is A Distance B/W, The Largest Distance Of A Planet From Sun Is Called, The Degree Of Freedom Of A Rigid Body? What Is, The Smallest Distance Of A Satellite From Planet Is Called, DA/Dt =H/2 Is A Mathematical Statement Of, Moment Of Inertia Of A Solid Cylinder Is, If 100 Particles Are In Motion In A Plane -Then Degree Of Freedom Will Be, I=Ic+Mb2 Is Mathematical Statement Of, Center Of Mass Of A Semi-Circular Region Of Radius R Is:

# Mechanics MCQs

## If equation of simple harmonic motion is y=2cos3t ,then time period will be

A. 3

B. 3/2π

C. 2π/3

D. 2/3

**View Answer**

**A. 3**

## Moment inertia of thin rod of length a and mass m about an axis perpendicular to rod through center

A. mr2

B. mr2/2

C. 2mr2/5

D. mr2/12

**View Answer**

**D. mr2/12**

## By applying force, distance b/w particles does not change ,such a body is called

A. Elastic

B. Rigid

C. Discrete

D. None of these

**View Answer**

**B. Rigid**

## Center of mass of a semi-circular region of radius r is

A. 2r/π

B. 2r/3 π

C. 4r/3 π

D. None of these

**View Answer**

**C. 4r/3 π**

## “A rotation of a rigid body about a fixed point is equivalent to rotation about a line passes through that point”. Is

A. Eulers’ theorem

B. Chasles’ theorem

C. Perpendicular axis theorem

D. Parallel axis theorem

**View Answer**

**A. Eulers’ theorem**

## I=Ic+Mb2 is mathematical statement of

A. Eulers’ theorem

B. Chasles’ theorem

C. Perpendicular axis theorem

D. Parallel axis theorem

**View Answer**

**D. Parallel axis theorem**

## Moment of inertia about diameter of a hallow sphere of radius r and mass m is given by

A. mr2

B. mr2/2

C. 2mr2/5

D. mr2/12

**View Answer**

**A. mr2**

## If 100 particles are in motion in a plane ,then degree of freedom will be

A. 100

B. 200

C. 300

D. 400

**View Answer**

**B. 200**

## Three particles of unit masses are located at unit distance on three coordinate axis then center of mass will be

A. (0,0,0)

B. (1,1,1)

C. (3,3,3)

D. (1/3,1/3,1/3)

**View Answer**

**D. (1/3,1/3,1/3)**