Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.PowerEasy2 minPYQ_2020
PhysicsEasysingle choice

An object is dragged along a horizontal surface by the machine which delivers a constant power. How does the distance moved by the object is dependent on timet?

Options:

Answer:
B
Solution:

Power=WorkTime⁡=Force×distanceTime=Force×velocity

∴Force×velocity=constant(K⁡)

or ( m⁡ a ) ( a t⁡ ) = K⁡ 

or a = ( K⁡ m⁡ t⁡ ) 1 / 2

∵ s⁡ = 1 2 a t⁡ 2

∴ s⁡ = 1 2 ( K⁡ m⁡ t⁡ ) 1 / 2 t⁡ 2 = 1 2 ( K⁡ m⁡ ) 1 / 2 t 3 / 2

orsis proportional tot3/2

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:W.E.P.Subtopic:Power
⏱ 2mℹ️ Source: PYQ_2020

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