Gce Model Questions Vol1 2017 Physics Question 16

Practice objective / multiple choice question 16 from the 2017 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2017 Physics Objective / Multiple Choice Medium Difficulty
Question 16 GCE_MODEL_QUESTIONS_VOL1 • 2017 • PHYSICS • objective

A \(5.0\ \text{kg}\) block is pulled up a \(30^{\circ}\) incline of length \(8.0\ \text{m}\) by a constant horizontal force of \(60\ \text{N}\). The coefficient of kinetic friction between the block and the incline is \(\mu_k = 0.20\). The block starts from rest at the bottom. (a) Find the speed of the block when it reaches the top of the incline. (b) Find the average power delivered by the horizontal force during the motion.

Answer Options

A. Speed \(=5.12\ \text{m s}^{-1}\); average power \(=1.20\times10^{2}\ \text{W}\)
B. Speed \(=6.00\ \text{m s}^{-1}\); average power \(=1.50\times10^{2}\ \text{W}\)
Correct Answer C. Speed \(=6.44\ \text{m s}^{-1}\); average power \(=1.68\times10^{2}\ \text{W}\)
D. Speed \(=7.30\ \text{m s}^{-1}\); average power \(=2.05\times10^{2}\ \text{W}\)
Correct Answer
C
Correct Option:
Speed \(=6.44\ \text{m s}^{-1}\); average power \(=1.68\times10^{2}\ \text{W}\)

About This Question

This is Gce Model Questions Vol1 2017 Physics Question 16. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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