Homework 04 Problem 6.8-Enhanced - with Feedback 9 of 10 Part A To move a large

Question

Homework 04 Problem 6.8-Enhanced - with Feedback 9 of 10 Part A To move a large crate across a rough floor, you push on it with a force F at an angle of 21 °below the horizontal, as shown in the figure (Figure 1). You may want to review (Pages 156- 163) Find the force necessary to start the crate moving, given that the mass of the crate is 32 kg and the coefficient of static friction between the crate and the floor is 0.58 Express your answer using two significant figures Figure of 1 F 230 Submit XIncorrect; Try Again; 5 attempts remaining 32 kg Provide Feedback Next>

Explanation / Answer

Normal force exert by the floor to the crate.

32*g + F*sin21 = N.

for the crate to move.

F*cos21=N*0.58

so F*cos21 = 32*g*0.58 + F*sin21*0.58

0.93*F = 181.88 + 0.20*F

F = 249.15 N

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

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