A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between t...

Assessment: JAMB UTME - Physics - 2002 Subject: Physics

Question 1 Report

A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1, determine the work one by the friction. [g = 10ms2]

\times

10-4

\times

10-3

\times

101

\times

102

Answer Details

Work done by friction = Friction force

\times

displacement from the relation, f = μR
where μ = coefficient of friction ; R = normal reaction
=> F = μ mg (r = mg)
= 0.01

\times

0.01

\times

10
∴ work done = F

\times

displacement
= 0.1

\times

0.01

\times

\times

0.02
= 0.002
= 2

\times

10-3

View Answer

A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between t...

Related Questions

Download The App On Google Playstore