For the mass m on the rotating wedge, as you think about resolving the forces into...
For the mass m on the rotating wedge, as you think about
resolving the forces into components, ask yourself if you should
tilt the axes parallel and perpendicular to the slope of the wedge,
or leave your axes horizontal and vertical. Remember to look at the
direction of the acceleration in determining whether or not you
should tilt the axes. Then, when you apply Newton's Second Law in
component form, you obtain which of the following equations?
a. Ncosθ - mg = 0 and Nsinθ = mv^2/r
b. N - mgcosθ = 0 and mgsinθ = mv^2/r
c. N - mg = 0 and N + mg = mv^2/r
d. Nsinθ - mg = 0 and Ncosθ = mv^2/r
I thought the answer was b. N - mgcosθ = 0 and mgsinθ = mv^2/r. But I was wrong could anyone help.
Homework Answers
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For the mass m on the rotating wedge, as you think about
resolving the forces into...
у The diagram shows the all of the forces acting on a body of mass 2.76...
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I know thats alot
of information but if you could just answer exercises 7.19 and 7.20
at the bottom I would really appreciate it!!!! I WILL RATE!
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I need to rescale (4) from the first page to the equation on the second page. 2.[60pts.] A bead of mass m is constrained to slide along a straight rigid horizontal wire. A spring with natural len...
I
need to rescale (4) from the first page to the equation on the
second page.
2.[60pts.] A bead of mass m is constrained to slide along a straight rigid horizontal wire. A spring with natural length Lo and spring constant k is attached to the bead and to a support point a distance h from the wire. See Figure 1. Let z(t) denote the position of the bead on the wire at time t. (Note that x is measured...
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Hi, can you solve the question for me step by step, I will rate up if the working is correct. I will post the answer together with the question. Answer: Question 5 A particle of mass m rests on a s...
Hi, can you solve the question for me step by step, I will rate
up if the working is correct. I will post the answer together with
the question.
Answer:
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у The diagram shows the all of the forces acting on a body of mass 2.76 kg. The three forces have magnitudes F1 = 67 N, F2 = 22.3 N, and F3 = 72.2 N, with directions as indicted in the diagram, where 0 = 40.3 degrees and p = 29.9 degrees. The dashed lines are parallel to the x and y axes. At 1 = 0, the body is moving at a speed of 5.74 m/s in the positive...
I know thats alot
of information but if you could just answer exercises 7.19 and 7.20
at the bottom I would really appreciate it!!!! I WILL RATE!
Example 7.18 Consider a reflection across the line given in standard coordinates remember, ( must be a subspace, so must contain 0, the origin. Since the line isy=-3r, if we let z = 1, we get V--3, ald these are the coordinates of a basis wector for C. If we rotate this vector,...
please write neatly
Practice drawing FBDs You will first identify all the forces using the approach above (Foblect 1-object 2) and then switch to mg, N, 1, e H. Each description below indicates the object of interest via bold italics. Draw a picture of the situation, in which you identify contact points. Then, following the same steps outlined above, draw a FBD on the object of interest. All forces should be written as above (Fobiect 1-+oblect 2). Make sure the...
I
need to rescale (4) from the first page to the equation on the
second page.
2.[60pts.] A bead of mass m is constrained to slide along a straight rigid horizontal wire. A spring with natural length Lo and spring constant k is attached to the bead and to a support point a distance h from the wire. See Figure 1. Let z(t) denote the position of the bead on the wire at time t. (Note that x is measured...
5. A diatomic molecule (like H2) can be modeled as two atoms of equal mass m, connected by a rigid massless rod of length a. The system is free to rotate in 3-D. I claim the moment of inertia of this molecule around its ceater of mass is a. (Feel free to convince yourself that factor of k is coect!) Big hint if you 're having trouble getting started: this problem is directly related to McIntyre's Ch A) The energy...
Use the worked example above to help you solve this problem. A merry-go-round modeled as a disk of mass M 7.00 x 101 kg and radius R 2.40 m is rotating in a horizontal plane about a frictionless vertical axle (see figure). (a) After a student with mass m 86.0 kg jumps onto the merry-go-round, the system's angular speed decreases to 1.95 rad/s. If the student walks slowly from the edge toward the center, find the angular speed of the...
could you please solve a and b?
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Hi, can you solve the question for me step by step, I will rate
up if the working is correct. I will post the answer together with
the question.
Answer:
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In a hurry to digest this . Tks for the help (thumb up)
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