Write an expression for work done when a force is acting on an object in the direction of its
displacement. When angle between direction of force and displacement is 90°, what is the workdone?
Share
Write an expression for work done when a force is acting on an object in the direction of its
displacement. When angle between direction of force and displacement is 90°, what is the workdone?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer❤❤
In this case theta is an acute angle and Cos theta is positive for acute angles.
in this case theta is an obtuse angle and Cos theta is negative for obtuse angles.
In this case the work done is zero because when the applied force and particle displacement are mutually perpendicular theta is equal to 90 degree and Cos theta is equal to zero.