A.) Calculate the work done by the force F when the sled moves from x =0 to x =8

Question

A.) Calculate the work done by the force F  when the sled moves from x=0 to x=8.0m.

Express your answer using two significant figurs.

B.) Calculate the work done by the force F  when the sled moves from x=8.0m to x =12.0m.

Express your answer using two significant figurs.

C.) Calculate the work done by the force F  when the sled moves from x=0 to x =12.0m.

Express your answer using two significant figurs.

Exercise 6.36 A child applies a force F parallel to the r-axis to a 10.0-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x -component of the force she applies varies with the r -coordinate of the sled as shown in the figure (Figure 1) Figure 1 of! F, (N) 10 x (m) 12 4 8

Explanation / Answer

here,

mass , m = 10 kg

a)

from x = 0 m to x = 8 m

the work done by the force , W1 = 0.5 * 8 * (10 - 0)

W1 = 40 J

b)

from x = 8 m to x = 12 m

the work done by the force , W2 = 0.5 * (12 - 8) * (10 - 0)

W2 = 20 J

c)

from x = 0 m to x = 12 m

the work done by the force , W = W1 + W2

W = 60 J

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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