Polar moment of inertia(IP) of a circular disc is to be determined by suspending it by a wire and noting the frequency of oscillations(f)

← Prev Question Next Question →

1 Answer

Related questions

+1 vote

1 answer

A body having moment of inertia of 30 kg m^2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m^2. The resultant speed after meshing will be

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A connecting rod of mass 5.5 kg is placed on a horizontal platform whose mass is 1.5 kg. It is suspended by three equal wires, each 1.25 m long, from a rigid support. The wires are equally spaced round the circumference of a circle of 125 mm radius. When the c.g. of the connecting rod coincides with the axis of the circle, the platform makes 10 angular oscillations in 30 seconds. Determine the mass moment of inertia about an axis through its c.g.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The frequency of oscillation of a bigger diameter cylinder compared to a small cylinder inside a cylinder concave surface will be

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The frequency of oscillation of a cylinder inside a cylinder inside a cylindrical concave surface of bigger radius compared to a small radius will be

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A small connecting rod of mass 1.5 kg is suspended in a horizontal plane by two wires 1.25 m long. The wires are attached to the rod at points 120 mm on either side of the centre of gravity. If the rod makes 20 oscillations in 40 seconds, find the mass moment of inertia of the rod about a vertical axis through the centre of gravity.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The frequency of oscillation at moon compared to earth will be

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

If the radius of gyration of a compound pendulum about an axis through c.g. is more, then its frequency of oscillation will be

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A vehicle suspension system consists of a spring and a damper. The stiffness of the spring is 3.6 kN/m and the damping constant of the damper is 400 Ns/m. If the mass is 50 kg, then the damping factor (d ) and damped natural frequency (fn), respectively, are

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The natural frequency of a spring-mass system on earth is ωn. The natural frequency of this system on the moon (gmoon =gearth/6) is

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Inertia force acts

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Calculate the frequency of vibration in Hz of an object having mass moment of inertia = 100 Kg-m^2, mass of 10 Kg and the centre of gravity lies at a point 20 cm below the point of suspension.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

To determine moment of inertia of a rigid object both bifilar and trifilar suspensions can be used.

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

An automotive engine weighing 240 kg is supported on four springs with linear characteristics. Each of the front two springs have a stiffness of 16MN/m while the stiffness of each rear spring is 32MN/m. The engine speed (in rpm), at which resonance is likely to occur, is

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The Bifilar suspension method is used to determine

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In S.H.M., acceleration is proportional to

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In order to find the radius of gyration of a car, it is suspended with its axis vertical from three parallel wires 2.5 metres long. The wires are attached to the rim at points spaced 120° apart and at equal distances 250 mm from the axis. It is found that the wheel makes 50 torsional oscillations of small amplitude about its axis in 170 seconds. Find the radius of gyration of the wheel.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In S.H.M., the velocity vector w.r.t. displacement vector

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

For an under damped harmonic oscillator, resonance

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

If the mass moment inertia of the object is increased to 4 times then what will be the effect of time period of the simple pendulum?

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

If the mass moment inertia of the object is increased to 4 times then what will be the effect of time period of the compound pendulum?

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Calculate the moment of inertia of an object having time period = 14 sec, mass of 10 Kg and the centre of gravity lies at a point 20 cm below the point of suspension.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Calculate the time period of an object having mass moment of inertia = 100 Kg-m^2, mass of 10 Kg and the centre of gravity lies at a point 20 cm below the point of suspension.

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Calculate the moment of inertia of an object having time period = 14 sec, mass moment of inertia= 100 Kg-m^2 and the centre of gravity lies at a point 20 cm below the point of suspension.

asked Sep 23, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Which of the following apparatus is used to find the moment of inertia of an object?

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A rigid body has a radius of gyration of 20cm, if its moment of inertia is 10 Kg-m^2, find its mass in kilograms.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

...