Gce Model Questions Vol1 2020 Physics Question 25

Practice objective / multiple choice question 25 from the 2020 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2020 Physics Objective / Multiple Choice Medium Difficulty
Question 25 GCE_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • objective

A block of mass \(m = 5.0\ \text{kg}\) is released from rest at the top of a rough incline that makes an angle \(\theta = 30^{\circ}\) with the horizontal. The coefficient of kinetic friction between the block and the incline is \(\mu_{k}=0.20\) and the length of the incline is \(L = 2.0\ \text{m}\). At the bottom of the incline the block contacts a horizontal spring of force constant \(k = 800\ \text{N m}^{-1}\) and compresses it until the block momentarily comes to rest. Assuming no friction on the horizontal surface, calculate (i) the speed of the block at the bottom of the incline and (ii) the maximum compression \(x\) of the spring.

Answer Options

A. v = 2.85\ \text{m s}^{-1},\ \ x = 0.210\ \text{m}
Correct Answer B. v = 3.58\ \text{m s}^{-1},\ \ x = 0.283\ \text{m}
C. v = 3.12\ \text{m s}^{-1},\ \ x = 0.250\ \text{m}
D. v = 4.01\ \text{m s}^{-1},\ \ x = 0.320\ \text{m}
Correct Answer
B
Correct Option:
v = 3.58\ \text{m s}^{-1},\ \ x = 0.283\ \text{m}

About This Question

This is Gce Model Questions Vol1 2020 Physics Question 25. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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