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

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

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The strings used in bifilar suspension are perpendicular.

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In a bifilar suspension, if the length of the connecting rod is decreased, which of the following quantities will increase?

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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.

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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?

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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?

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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.

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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.

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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)

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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)

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When the body is twisted through a small angle θ about a vertical axis through the centre of gravity, which of the following motion will occur?

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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)

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The Bifilar suspension method is used to determine

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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)

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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.

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When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

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If the mass of the object is doubled then what will be the effect of time period of the compound pendulum?

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A helical spring, of negligible mass, and which is found to extend 0.25 mm under a mass of 1.5 kg, is made to support a mass of 60 kg. The spring and the mass system is displaced vertically through 12.5 mm and released. Determine the frequency of natural vibration of the system.

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Inertia force acts

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When the body is suspended at the point of suspension, its periodic time and frequency will be _____________ as compared to the body suspended at the point of percussion.

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Stiffness of the spring can be increased by

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Which of the following shape of the body can be considered as compound pendulum?

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An electric motor drives a machine through a speed reducing gear of ratio 9:1. The motor armature, with its shaft and gear wheel, has moment of inertia 0.6 kg-m^2. The rotating part of the driven machine has moment of inertia 45 kg-m^2. The driven machine has resisting torque of 100 N-m and the efficiency of reduction gear is 95%. Find the power which the motor must develop to drive the machine at a uniform speed of 160 r.p.m.

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