Neco 2020 Further Mathematics Question 23

Practice objective / multiple choice question 23 from the 2020 Neco Further Mathematics examination.

Neco 2020 Further Mathematics Objective / Multiple Choice Hard Difficulty
Question 23 NECO • 2020 • FURTHER_MATHEMATICS • objective

A block of mass \(5\,\text{kg}\) is pulled up a rough plane that makes an angle of \(30^{\circ}\) with the horizontal by a constant force of \(60\,\text{N}\) parallel to the plane. The coefficient of kinetic friction is \(0.2\). The block starts from rest at the bottom and moves \(4\,\text{m}\) up the plane. (a) Find the speed of the block at the end of the motion. (b) Find the work done by the pulling force. (c) Find the mechanical energy lost due to friction (in joules).

Answer Options

A. Speed = 6.57 m/s; Work by pull = 250 J; Energy lost to friction = 33.94 J
B. Speed = 5.23 m/s; Work by pull = 240 J; Energy lost to friction = 33.94 J
C. Speed = 6.57 m/s; Work by pull = 240 J; Energy lost to friction = 45.00 J
Correct Answer D. Speed = 6.57 m/s; Work by pull = 240 J; Energy lost to friction = 33.94 J
Correct Answer
D
Correct Option:
Speed = 6.57 m/s; Work by pull = 240 J; Energy lost to friction = 33.94 J

About This Question

This is Neco 2020 Further Mathematics Question 23. It is one of the objective questions from the 2020 Neco Further Mathematics examination.

Difficulty level: Hard .

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