This is has a few parts to it will you explain how to get each answer Porins ass

Question

This is has a few parts to it will you explain how to get each answer
Porins assignmen you suDmt answers by quesion pans. Ine numoer Assignment scoring Your last submission is used for your score -10 points osColPhys20 64.3 Suppose two children push horizontally, but in exactly opposite directions, on a wagon containing a third child. The first child exerts a force of Fi 7s.o N, the second a force o Fa 98.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 26.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (Select all that apply.) the children outside the wagon O the child in the wagon the wagon (b) which of the following diagrams correctly represents the free body diagram for the situation described here? sa O Ask me DOLL

Explanation / Answer

Q9.

to calculate acceleration of any object, it should be part of the system

hence the child in the wagon and the wagon should be the system of interest.

part b:

the third option (lower left) shows the correct free body diagram

reason: W should be acting in vertically downward direction as gravity is verticallly downwards

N is the normal force from the wagon and should act vertically upward

F2 is of higher magnitude and opposite to F1

so friction will oppose the net movement and hence f and F1 will be in same direction

part c:

net force =F2-F1-f=98-75-12=11 N

acceleration=net force/mass=11/26=0.4231 m/s^2

part d:

if friction force is 23 N, there would not be any movement as it should act in the direction opposite to the motion.

so asume the motion is along F2.

then f will act along side F1.

but net force along F2=F2-F1-f=98-75-23=0 N

so there is no net force and aceeleration=0 m/s^2

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.