If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called-A-virtual workB-imaginary workC-zero workD-negative work.-D-negative work.

Question

If the angle between the applied force and the direction of motion of a body, is between 90&#176; and 180&#176;, the work done, is called-A-virtual workB-imaginary workC-zero workD-negative work.-D-negative work.

APTITUDE CRACK · Accepted Answer

The correct option is  D negative work. Work, W = PCos&Icirc;&cedil;. And we know Cos is ( ve) in 2nd quadrant i.e. (&Icirc;&cedil;= 90&deg; to 180&deg;) W= PCos&Icirc;&cedil; ( work is negative ). Or, Simply as &Icirc;&cedil; is between 90&deg; to 180&deg;, the force acting &amp; the direction of motion is opposite to each other, that&#39;s why the work will be negative.

Applied Mechanics

Q1: If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

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Applied Mechanics

Q1: If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

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