Neco Model Questions Vol1 2019 Physics Question 4

Practice objective / multiple choice question 4 from the 2019 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2019 Physics Objective / Multiple Choice Medium Difficulty
Question 4 NECO_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • objective

A 5.0 kg block is released from rest at the top of a 30° incline that is 8.0 m long. The coefficient of kinetic friction between the block and the incline is 0.15. After reaching the bottom, the block moves onto a horizontal surface (same \(\mu\)) and compresses a spring of constant \(k = 1200\,\text{N·m}^{-1}\) until it momentarily stops. (a) Calculate the maximum compression of the spring (in metres, to three significant figures). (b) Determine the average power delivered by the spring during the compression phase (in kilowatts, to two decimal places).

Answer Options

A. Maximum compression ≈ 0.610 m; average power ≈ 1.45 kW
B. Maximum compression ≈ 0.420 m; average power ≈ 0.98 kW
C. Maximum compression ≈ 0.352 m; average power ≈ 0.85 kW
Correct Answer D. Maximum compression ≈ 0.486 m; average power ≈ 1.11 kW
Correct Answer
D
Correct Option:
Maximum compression ≈ 0.486 m; average power ≈ 1.11 kW

About This Question

This is Neco Model Questions Vol1 2019 Physics Question 4. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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