Question

describe nature of work done when theeta >90

Answer 1

Answer:

θ=90∘ the magnitude of the component of the force in the direction of the displacement is zero so no work is done as cos(90)=0. At θ>90∘ the magnitude of the component of the force along the line of the displacement is opposite in direction to the displacement so negative work is done, cosθ<0. Plz mark it as brilliant and follow me

Answer 2

Answer:

At θ=90∘ the magnitude of the component of the force in the direction of the displacement is zero so no work is done as cos(90)=0. At θ>90∘ the magnitude of the component of the force along the line of the displacement is opposite in direction to the displacement so negative work is done, cosθ<0.