# Ratio of movement of inertia of a circle and that of a square having same area about their centroidal axis is

1.  3/π

2.  3/2π

3.  4/π

4.  5/4π

4

3/π

Explanation :
No Explanation available for this question

# Wet clothes are hung on a clothesline outdoors in sub-zero weather. After a day the clothes are brought in to the house and observed to be dry. The process of drying is best explained as

1.  Vaporization

2.  Sublimation

3.  Melting

4.  Condensation

4

Sublimation

Explanation :
No Explanation available for this question

# Length to radius ratio 1/r of a solid cylinder such that the moments of inertia about the longitudinal and transverse axes are equal is

1.  1

2.  √3

3.  √5

4.  2

4

√3

Explanation :
No Explanation available for this question

# Ratio of movement of inertia of a circular body about its x-axis to that about y-axis is

1.  0.5

2.  1.0

3.  1.5

4.  2.0

4

1.0

Explanation :
No Explanation available for this question

# Two identical circular discs are released from rest at the top of an inclined plane. One of them rolls down without slipping, while the other slides down on its flat face. If friction is absent, which one would reach the bottom first

1.  The disc that slides

2.  The disc that rolls

3.  Both will reach at the same time

4.  Unpredictable

4

The disc that rolls

Explanation :
No Explanation available for this question

# A car is moving along a straight horizontal road with speed v0 , if the coefficient of friction between the tyres and road is µ, the shortest distance in which the car can stop is

1.  vo2/(2µg)

2.  v0/(µg)

3.  (v0/(µg))2

4.  (v0/(µg))1/2

4

vo2/(2µg)

Explanation :
No Explanation available for this question

# A block resting on an inclined plane beings to slide down the plane when angle of increased at 30 degree. Then the coefficient of friction between block and the plane is

1.  0.38

2.  0.578

3.  0.72

4.  0.866

4

0.578

Explanation :
No Explanation available for this question

# A body of weight 120 N rests on a rough horizontal surface (µ = 0.3) and is acted upon by a force applied at an angle of 30 degree to the horizontal. The force required to just cause the body to slide over the surface is about

1.  22.5 N

2.  27N

3.  35.0N

4.  40N

4

35.0N

Explanation :
No Explanation available for this question

# An effort P1 is just sufficient to drag a load W up an inclined plane having inclination θ with the horizontal direction. Subsequently the effort P1 is reduced to P2 and the load W is just able to move downwards along the plane. Then load W will be equal to

1.  ((P1+P2)/2)sinθ

2.  ((P1+P2)/2)cosecθ

3.  (P1+P2)/tanθ

4.  (P1+P2)/2cosecθ

4

((P1+P2)/2)cosecθ

Explanation :
No Explanation available for this question

1.  15 kg

2.  25 kg

3.  35 kg

4.  45 kg

4