Consider the 65.0 kg ice skater being pushed by two others shown in the figure. Fot F₁ F₂ Free-body diagram F₂ F₁

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Chapter5: Newton's Law Of Motion
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Problem 23P: While sliding a couch across a floor, Andrea and Jennifer exert forces FA and FJ on the couch....
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Consider the 65.0 kg ice skater being pushed by two others shown in the figure.
F₁
F₂
Ftot
F₁
F₂
Free-body diagram
F₂
x m/s² (in the direction of Ftot)
F₁
(a) Find the direction (in degrees) and magnitude (in N) of Ftot the total force exerted on her by the others, given that the magnitudes F, and F, are 28.0 N and 17.0 N, respectively.
✓ (counterclockwise from the direction of F₁ is positive)
1
direction
31.26
32.76
magnitude
✔ N
(b) What is her initial acceleration (in m/s2) if she is initially stationary and wearing steel-bladed skates that point in the direction of Ftot? (Assume the value of #, for steel on ice is 0.04.)
0.112
(c) What is her acceleration (in m/s2) assuming she is already moving in the direction of Fot? Remember that friction is always in the opposite direction of motion or attempted motion between surfaces in
contact.
0.504
Transcribed Image Text:Consider the 65.0 kg ice skater being pushed by two others shown in the figure. F₁ F₂ Ftot F₁ F₂ Free-body diagram F₂ x m/s² (in the direction of Ftot) F₁ (a) Find the direction (in degrees) and magnitude (in N) of Ftot the total force exerted on her by the others, given that the magnitudes F, and F, are 28.0 N and 17.0 N, respectively. ✓ (counterclockwise from the direction of F₁ is positive) 1 direction 31.26 32.76 magnitude ✔ N (b) What is her initial acceleration (in m/s2) if she is initially stationary and wearing steel-bladed skates that point in the direction of Ftot? (Assume the value of #, for steel on ice is 0.04.) 0.112 (c) What is her acceleration (in m/s2) assuming she is already moving in the direction of Fot? Remember that friction is always in the opposite direction of motion or attempted motion between surfaces in contact. 0.504
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