kg/cm
Bar
Atmosphere
Newton
D. Newton
n
n²
2n
2n - 1
Proportional to normal load between the surfaces
Dependent on the materials of contact surface
Proportional to velocity of sliding
Independent of the area of contact surfaces
Lie
Do not lie
Either A or B
None of these
Zeroth order
First order
Second order
Third order
kg-m²
m⁴
kg/m²
m³
2mr2/3
2mr2/5
7mr2/3
7mr2/5
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
Equal to
Less than
Greater than
None of these
π/16 (D² - d²)
π/16 (D³ - d³)
π/32 (D⁴ - d⁴)
π/64 (D⁴ - d⁴)
Angle of friction
Angle of repose
Angle of banking
None of these
a4/4
a4/8
a4/12
a4/36
P/sin β = Q/sin α = R/sin
P/sin α = Q/sin β = R/sin
P/sin = Q/sin α = R/sin β
P/sin α = Q/sin = R/sin β
g/2
g
√2.g
2g
Newton's first law of motion
Newton's second law of motion
Principle of conservation of energy
Principle of conservation of momentum
Coefficient of friction
Angle of friction
Angle of repose
Sliding friction
Bodies having relative motion
Two dry surfaces
Two lubricated surfaces
Solids and liquids
Area of contact
Shape of surfaces
Strength of surfaces
Nature of surface
Between 60 and 70 %
Between 70 and 80 %
Between 80 and 90 %
100 %
7.8 N
8.9 N
9.8 N
12 N
Everybody continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
To every action, there is always an equal and opposite reaction
None of the above
W sinθ
W cosθ
W tanθ
None of these
Curved surface
Convex surface
Horizontal surface
None of these
Dyne
Kilogram
Newton
Watt
bh3/4
bh3/8
bh3/12
bh3/36
mv2
mgv2
0.5 mv2
0.5 mgv2
Three forces acting at a point will be in equilibrium
Three forces acting at a point can be represented by a triangle, each side being proportional to force
If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
Balance each other
Produce a couple and an unbalanced force
Are equivalent
Cannot balance each other
Principle of independence of forces
Principle of resolution of forces
Principle of transmissibility of forces
None of these
Ellipse
Hyperbola
Parabola
Circle
A reversible machine
A non-reversible machine
An ideal machine
None of these