Answer to Question #298888 in Physics for Jobbie

Question #298888

a locomotive of 60 tonne mass pull some carriages of total mass 240 tonne, a distance of half a kilometre up a 1 in 200 incline with an acceleration of 0.2ms^-2. if the overall rolling resistance is 5% of a normal reaction, what is the total work done?


1
Expert's answer
2022-02-17T04:36:37-0500

Given:

m=60t+240t=300t=3105kgm=\rm 60\: t+240\: t=300\: t=3*10^5\: kg

d=500md=500\:\rm m

sinθ=1/200\sin\theta=1/200

a=0.2m/s2a=0.2\:\rm m/s^2

μ=0.05\mu=0.05


The net force

F=ma=31050.2=6104NF=ma=3*10^5*0.2=6*10^4\:\rm N

The total work done

W=Fd=6104N500m=3107JW=Fd=6*10^4\:\rm N*500\: m=3*10^7\:\rm J


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment