Neco 2020 Physics Question 24
Practice objective / multiple choice question 24 from the 2020 Neco Physics examination.
A \(2\,\text{kg}\) block starts from rest at the top of a frictionless incline that makes an angle of \(30^{\circ}\) with the horizontal. It slides down, reaches the bottom and then moves onto a horizontal rough surface of length \(1.5\,\text{m}\) where the coefficient of kinetic friction is \(\mu_{k}=0.2\). At the end of the rough surface the block compresses a spring of constant \(k=800\,\text{N\,m}^{-1}\) by \(0.10\,\text{m}\) and momentarily comes to rest. Assuming \(g=9.8\,\text{m\,s}^{-2}\), determine the minimum vertical height \(h\) of the incline required for the block to compress the spring by the given amount. (Use the diagram provided.)
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About This Question
This is Neco 2020 Physics Question 24. It is one of the objective questions from the 2020 Neco Physics examination.
Difficulty level: Medium .
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