Neco 2018 Physics Question 5

Practice essay / theory question 5 from the 2018 Neco Physics examination. This question covers Work, Energy, Power, Friction .

Neco 2018 Physics Essay / Theory

Topics: Work Energy Power Friction

Question 5 NECO • 2018 • PHYSICS • essay

A 12 kg crate is pulled up a rough inclined plane that is 5.0 m long and makes an angle of 30° with the horizontal. The crate starts from rest at the bottom of the plane. A constant force of 80 N is applied parallel to the plane to pull the crate upward. The coefficient of kinetic friction between the crate and the plane is 0.20. The motion takes 4.5 s to reach the top of the incline.

( a )

Calculate the work done by the pulling force on the crate.

( b )

Determine the increase in kinetic energy of the crate when it reaches the top of the incline.

( c )

If the crate reaches the top in 4.5 s, calculate the average power delivered by the pulling force.

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This is Neco 2018 Physics Question 5. It is one of the essay questions from the 2018 Neco Physics examination.

The question covers Work, Energy, Power, Friction .

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