City Guilds Model Questions Vol1 2018 Engineering Question 3

Practice practical question 3 from the 2018 City Guilds Model Questions Vol1 Engineering examination. This question covers Friction, Inclined plane, Work and energy .

City Guilds Model Questions Vol1 2018 Engineering Practical
Topics: Friction Inclined plane Work and energy
Question 3 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2018 • ENGINEERING • practical

A wooden block of mass 2.0 kg is placed on an inclined plane that is 2.0 m long and rises 0.5 m vertically. Using a spring balance, the following observations are recorded: • On a horizontal surface the force required to start the block moving is 5.0 N. • With the plane set to its inclined position, the force required to pull the block up the plane at constant speed is 12.0 N.

Question Parts

( a )
Determine the coefficient of static friction (μs) from the horizontal experiment and the coefficient of kinetic friction (μk) from the inclined‑plane experiment.
( b )
Using the value of μk obtained, calculate the minimum pulling force required to move the block up a similar plane that makes an angle of 20° with the horizontal.
( c )
State two possible sources of error that could affect the values of μs and μk obtained in the experiments.

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About This Question

This is City Guilds Model Questions Vol1 2018 Engineering Question 3. It is one of the practical questions from the 2018 City Guilds Model Questions Vol1 Engineering examination.

The question covers Friction, Inclined plane, Work and energy .

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