Gce Model Questions Vol1 2017 Physics Question 19

Practice objective / multiple choice question 19 from the 2017 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2017 Physics Objective / Multiple Choice Medium Difficulty
Question 19 GCE_MODEL_QUESTIONS_VOL1 • 2017 • PHYSICS • objective

A \(10\ \text{kg}\) block rests on a plane inclined at \(25^{\circ}\) to the horizontal. The coefficients of static and kinetic friction are \(\mu_s = 0.40\) and \(\mu_k = 0.30\) respectively. A rope parallel to the incline pulls the block upward. (a) Determine the minimum tension in the rope required to start moving the block up the incline. (b) Once the block moves at constant speed of \(2.0\ \text{m s}^{-1}\), find the power supplied by the rope.

Answer Options

A. Minimum tension \(=68.2 \ \text{N}\); power at 2.0 m s⁻¹ \(=1.10\times10^{2} \ \text{W}\)
Correct Answer B. Minimum tension \(=76.9\ \text{N}\); power at 2.0 m s⁻¹ \(=1.36\times10^{2}\ \text{W}\)
C. Minimum tension \(=73.0 \ \text{N}\); power at 2.0 m s⁻¹ \(=1.25\times10^{2} \ \text{W}\)
D. Minimum tension \(=84.5 \ \text{N}\); power at 2.0 m s⁻¹ \(=1.50\times10^{2} \ \text{W}\)
Correct Answer
B
Correct Option:
Minimum tension \(=76.9\ \text{N}\); power at 2.0 m s⁻¹ \(=1.36\times10^{2}\ \text{W}\)

About This Question

This is Gce Model Questions Vol1 2017 Physics Question 19. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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