mv2
mgv2
0.5 mv2
0.5 mgv2
C. 0.5 mv2
If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium
If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
If a polygon representing forces acting at a point is closed then forces are in equilibrium
If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium
Static friction
Dynamic friction
Limiting friction
Coefficient of friction
Impulsive force
Mass
Weight
Momentum
Impulsive force
Mass
Weight
Momentum
β/2
30° + β/2
45° + β/2
60° + β/2
Velocity
Acceleration
Momentum
None of these
kg m
kcal
Watt
Watt hours
tanθ = ΣH/ΣV
tanθ = ΣV/ΣH
tanθ = ΣV × ΣH
tanθ = √(ΣV + ΣH)
Same
Double
Half
Four times
Second moment of force
Second moment of area
Second moment of mass
All of these
Translatory
Rotary
Circular
Translatory as well as rotary
g/2
g/3
g/4
None of these
Coplanar concurrent forces
Coplanar non-concurrent forces
Non-coplanar concurrent forces
Non-coplanar non-concurrent forces
P/2
2P
√2 × P
P/√2
Mass
Volume
Density
Acceleration
Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction
Ratio of limiting friction and normal reaction
The friction force acting when the body is just about to move
The friction force acting when the body is in motion
30°
45°
60°
90°
All the forces are equally inclined
Sum of all the forces is zero
Sum of resolved parts in the vertical direction is zero (i.e. ΣV = 0)
None of these
The kinetic energy of a body during impact remains constant.
The kinetic energy of a body before impact is equal to the kinetic energy of a body after impact.
The kinetic energy of a body before impact is less than the kinetic energy of a body after impact.
The kinetic energy of a body before impact is more than the kinetic energy of a body after impact.
At distance from the plane base 3r
At distance from the plane base 3r
At distance from the plane base 3r
At distance from the plane base
Half
Equal to
Double
None of these
mv2
mgv2
0.5 mv2
0.5 mgv2
More inclined when moving
Less inclined when moving
More inclined when standing
Less inclined when standing
T.ω (in watts)
T.ω/60 (in watts)
T.ω/75 (in kilowatts)
T.ω/4500 (in kilowatts)
The C.G. of a circle is at its centre
The C.G. of a triangle is at the intersection of its medians
The C.G. of a rectangle is at the intersection of its diagonals
The C.G. of a semicircle is at a distance of r/2 from the centre
(1 - sinφ)/(1 + sinφ)
(1 + sinφ)/(1 - sinφ)
(1 - tanφ)/(1 + tanφ)
(1 + tanφ)/(1 - tanφ)
Direction of the axis of rotation
Magnitude of angular displacement
Sense of angular displacement
All of these
Reversible machine
Non-reversible machine
Neither reversible nor non-reversible machine
Ideal machine
(v1 - v2)/(u1 - u2)
(v₂ - v₁)/(u1 - u2)
(u1 - u2)/(v1 - v2)
(u₂ + u₁)/(v₂ + v₁)
h/kG
h2/kG
kG2/h
h × kG