An irregular body may have more than one centre of gravity.

More Questions from Engineering Mechanics

• The maximum height of a projectile on a horizontal plane, 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 resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then
• Whenever a force acts on a body and the body undergoes a displacement, then
• Moment of inertia of a circular section about its diameter (d) is
• When a particle moves along a straight path, there will be centripetal acceleration as well as tangential acceleration.
• Rotational kinematics — tangential (linear) acceleration: A body is rotating along a circular path of radius r with an angular acceleration α (in rad/s^2). What is the expression for its tangential (linear) acceleration a along the path?
• Plane pin-jointed frames — condition for imperfection: A framed structure (simple, plane, pin-jointed) is considered imperfect if the number of members m is __________ (2j − 3), where j is the number of joints.
• Connected masses — effect of friction on string tension: A 20 kg block on a rough horizontal plane is connected by a light string over a smooth pulley to a 5 kg hanging mass (free to move vertically). As the coefficient of friction between the block and plane increases, how does the string tension change?
• Work and power — basic definition: In mechanics, the rate at which work is done or energy is transferred per unit time is called:

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