One-fourth of the total height above base
One-third of the total height above base
One-half of the total height above base
Three-eighth of the total height above the base
B. One-third of the total height above base
The same as centre of gravity
The point of suspension
The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
None of the above
Directly proportional
Inversely proportional
Cube root
None of these
Both the balls undergo an equal change in momentum
The change in momentum suffered by rubber ball is more than the lead ball
The change in momentum suffered by rubber ball is less than the lead ball
None of the above
Bears a constant ratio to the normal reaction between the two surfaces
Is independent of the area of contact, between the two surfaces
Always acts in a direction, opposite to that in which the body tends to move
All of the above
Right angled triangle
Equilateral triangle
Square
Circle
Increase
Decrease
Remain the same
None of these
n
n²
2n
2n - 1
2.√(gh)
√(gh)
√(2gh)
2g.√h
Mechanical advantage is greater than velocity ratio
Mechanical advantage is equal to velocity ratio
Mechanical advantage is less than velocity ratio
Mechanical advantage is unity
m1/m2
m1. g. sin α
m1.m2/m1 + m2
m1. m2.g (1 + sin α)/(m1 + m2)
A reversible machine
A non-reversible machine
An ideal machine
None of these
Equal to
Less than
Greater than
None of these
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
None of these
Their algebraic sum is zero
Their lines of action are at equal distances
The algebraic sum of their moments about any point in their plane is zero
The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
Dyne
Watt
kg-m
Joule
Resultant couple
Moment of the forces
Resulting couple
Moment of the couple
tanθ = ΣH/ΣV
tanθ = ΣV/ΣH
tanθ = ΣV × ΣH
tanθ = √(ΣV + ΣH)
One point
Two points
Plane
Perpendicular planes
β/2
30° + β/2
45° + β/2
60° + β/2
Is constant at every instant
Varies from point to point
Is maximum in the start and minimum at the end
Is minimum in the start and maximum at the end
Angstrom
Light year
Micron
Milestone
πd3/16
πd3/32
πd4/32
πd4/64
MS/3
MS/4
MS/5
None of these
t = 2u. sinα/g
t = 2u. cosα/g
t = 2u. tanα/g
t = 2u/g.sinα
1/2
2/3
3/2
2/4
Increasing the length of the handle
Increasing the radius of the load drum
Increasing the number of teeth of the pinion
All of the above
πd3/16
πd3/32
πd4/32
πd4/64
Non-equilibrium
Partial equilibrium
Full equilibrium
Unpredictable
(ΣV)2 + (ΣH)2
√[(ΣV)2 + (ΣH)2]
(ΣV)2 +(ΣH)2 +2(ΣV)(ΣH)
√[(ΣV)2 +(ΣH)2 +2(ΣV)(ΣH)]
Curved surface
Convex surface
Horizontal surface
None of these