Neco 2022 Physics Question 6
Practice objective / multiple choice question 6 from the 2022 Neco Physics examination.
A roller‑coaster car of mass \(500\ \text{kg}\) starts from rest at the top of a hill \(30\ \text{m}\) above the ground. It descends without friction and then immediately enters a vertical circular loop of radius \(10\ \text{m}\).\n\n(i) What is the minimum speed of the car at the top of the loop so that it remains in contact with the track?\n\n(ii) Assuming the car just reaches this minimum speed at the top of the loop, calculate the average mechanical power that a motor must supply to pull the car back to the top of the hill in \(20\ \text{s}\), neglecting all losses.
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About This Question
This is Neco 2022 Physics Question 6. It is one of the objective questions from the 2022 Neco Physics examination.
Difficulty level: Medium .
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