The centre of oscillation and centre of suspension for a compound pendulum are interchangeable.
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.
The unit of work in S.I. units is
The static friction
The maximum height of a projectile on a horizontal plane, is
The acceleration of a particle moving with simple harmonic motion is __________ at themean position.
The velocity of a particle moving with simple harmonic motion is __________ at the mean position.
A framed structure is imperfect, if the number of members are __________ (2j - 3).
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad / s2, is
The total energy possessed by a system of moving bodies
The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is
In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)
The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning.
A couple produces
Energy may be defined as the capacity of doing work.
For a self locking machine, the efficiency must be
The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then
Onejoule is equal to
Whenever a force acts on a body and the body undergoes a displacement, then
When a particle moves along a straight path, there will be centripetal acceleration as well as tangential acceleration.
If the body falls freely under gravity, then the gravitational acceleration is taken as
A framed structure, as shown in the below figure, is a
The rate of change of displacement of a body is called
The efficiency of a screw jack is maximum, when(where α = Helix angle, and φ = Angle of friction.)
The periodic time (T) is given by(where ω = Angular velocity of particle in rad / s.)