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A block of 100 kg mass is sitting on a railroad car with a mass of...

A block of 100 kg mass is sitting on a railroad car with a mass of 2,000 kg. The railroad car is sitting on a track.

What is the free body diagram for each of the two objects?

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Answer #1

Here variable of diiferent forces exert on free body diagram is;

w1=weight of rail road car

w2=weight of block

N1=normal force of rail road car

N2=normal force of block

F1=forward force of railroad car

F2= forward force of block

f1=\muN1=frictional force of railroad car

f2=\muN2=frictional force of block

COM=centre of mass

Com cenke d monb Block N Block 左 Com,- Cente jmass road YC

For simplicity we redraw free body diagram taking railroad car as a bigger block

Ni MGooo) N

Therfore for each objects four forces are applied from all four direction to cancel each other and verify the rest state i.e W1<--------------->N1

F1<--------------->\muN1 =f1

W2<------------------->N1 of upper surface of railroad car

N2<---------------------W2

F2<---------------------->\muN2 =f2

byeeeeeeeeeeeee

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