Waec Model Questions Vol1 2021 Physics Question 6

Practice objective / multiple choice question 6 from the 2021 Waec Model Questions Vol1 Physics examination.

Waec Model Questions Vol1 2021 Physics Objective / Multiple Choice Medium Difficulty
Question 6 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective
Waec Model Questions Vol1 2021 Physics Question 6 diagram

A 2.0‑kg block is placed at the top of a smooth 5.00‑m long incline that makes an angle of 30° with the horizontal. The block is released from rest and slides down, compressing a horizontal spring of spring constant 800 N m⁻¹ fixed at the foot of the incline. The spring is compressed by 0.10 m before the block comes to rest. The kinetic friction coefficient μ_k between the block and the incline is unknown. (a) Determine μ_k. (b) Find the average power delivered by the block to the spring during the compression phase.

Answer Options

A. μ_k = 0.45 (dimensionless); average power ≈ 1.20×10^2 W
B. μ_k = 0.60 (dimensionless); average power ≈ 1.50×10^2 W
Correct Answer C. μ_k = 0.53 (dimensionless); average power ≈ 1.34×10^2 W
D. μ_k = 0.38 (dimensionless); average power ≈ 1.05×10^2 W
Correct Answer
C
Correct Option:
μ_k = 0.53 (dimensionless); average power ≈ 1.34×10^2 W

About This Question

This is Waec Model Questions Vol1 2021 Physics Question 6. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.

Difficulty level: Medium .

View More Waec Model Questions Vol1 2021 Physics Questions More Waec Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support