Three forces acting at a point, can be rep-resented by the sides of a triangle, each side being in proportion to the force
Three forces acting along the sides of a triangle are always in equilibrium
If three forces acting on a, point can be represented in magnitude and direction, by the sides of a triangle taken in order, these will be in equilibrium
If the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third side of the triangle, taken in opposite order
D. If the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third side of the triangle, taken in opposite order
When the string is horizontal
When the stone is at the highest position
When the stone is at the lowest position
At all the positions
2 m/sec and 2 m/sec
3 m/sec and 2 m/sec
3 m/sec and 3 m/sec
4 m/sec and 6 m/sec
2 sec
3 sec
4 sec
5 sec
½ cos α
½ sin α
½ tan α
2 cos α
Uneven distribution of the gravitational field
Gravity of the sun and the moon
Aerodynamic forces
None of these
cm4
kg.cm²
gm.cm²
gm.cm3
Mr2
½ Mr2
Mr2
πr4/2
20 kg
25 kg
30 kg
35 kg
Erg
Joule
Newton
Dyne
If a polygon representing the forces acting at point in a body is closed, the forces are in equilibrium
If forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by the closing side of the polygon
If forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side of the polygon, taken in opposite order
If forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium
Must be decreased
Must be increased
Is not changed but weight of the bob is increased
Is not changed but weight of the bob is decreased
b3/4
b4/12
b4/3
b4/8
2 T
1/2 T
√2 T
3 T
437.5 cm4
337.5 cm4
237.5 cm4
137.5 cm4
Parabola
Catenary
Cycloid
Ellipse
0 and 5 m/sec
5 m/sec and 0
5√3 m/sec and 0
5 and 5√3 m/sec
Be in equilibrium
Always reduce to a resultant force
Always reduce to a couple
Both (A) and (C)
Equation of dynamics
Equation of dynamic equilibrium
Equation of statics
None of these
h/3
h/4
2h/3
3h/4
Zero
Maximum
Minimum
None of these
The horizontal reaction at A is 2 √3t ←
The horizontal reaction at C is 2 √3t →
The vertical reaction at A is zero
All the above
10.8 t
10.6 t
10.4 t
10.2 t
The same line in the same sense
The same line in opposite sense
The perpendicular to both the lines
None of these
0.25
0.50
0.75
1.0
To be zero
To be maximum
To be minimum
None of these
y = c cosh x/c
y = c sinh x/c
y = c tan x/c
y = c sin x/c
Moon
Earth
Sun
Pole
v = u + ft
S = ut + ½ ft2
2fS = v2 - u2
All the above
The ratio of the friction and the normal reaction
The force of friction when the body is in motion
The angle between the normal reaction and the resultant of normal reaction and limiting friction
The force of friction at which the body is just about to move
229.34 cm4
329.34 cm4
429.34 cm4
529.34 cm4