Physics, asked by unatidadlani, 10 months ago

if the angle between force and displacement is greater than 90 degree then the work done will be:
a: Positive
b: Negative
c: Zero
d: Maximum

Answers

Answered by muvasreetham22

............Negative.............

Work done = force x displacement x cos of angle between force and displacement

cos of more than 90 is negative..

Plz mark me as BRAINLIEST...

ashisingh24: it is zero when it is 90 degree

ashisingh24: i have read the question wrong ....i didn't saw that there has been wriiten that angle greater than 90

muvasreetham22: If the angle is greater than 90
It will be in the second quadrant,
where cos function is negative.

nrgchandra: what is your name @muvasreetham

muvasreetham22: Hi

muvasreetham22: My name is that itself

muvasreetham22: why??

nrgchandra: just for confirmation its not normal in my are are you from south india

muvasreetham22: yes

muvasreetham22: u r from??

Answered by hotelcalifornia

Work is said to be done when a body undergoes movement due to an external force applied on it.
Work done is given as dot product of Force applied on body and displacement of the body.
Work done = F · d = F * d * cosθ, where F is the magnitude of force exerted on the body, d is the displacement of body and θ is the angle between direction of force and direction of displacement.

When angle between force and displacement is more than 90°, the work done is negative because value of cosθ is negative for θ more than 90°.

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