Consider the figure below.
(a) What is the resultant force exerted by the two cables supporting the traffic light in the figure?
magnitude | N (this is not 0) |
direction | ---Select--- rightward leftward upward downward |
(b) What is the weight of the light?
N
Consider the figure below. (a) What is the resultant force exerted by the two cables supporting...
Instantaneous Velocity: example problem A train moves slowly eastward along a straight portion of track. 10 Its position as a function of time 8 is shown in the graph. 6 Find: A B (a) The average velocity for the total trip. (b) The average velocity for the 1(s) first 4.00 s. 2 4 6 8 10 12 4 (c) The average velocity from t = 4.00 s to t = 8.00 s. (d) The instantaneous velocity at t = 2.00...
A traffic light is suspended from two cables. In the figure below, the tension in the cable on the right (F2t) is 420 N, θ1 = 30° and θ2 = 50°. (a) Draw a FBD for the traffic light. Be sure to label all angles and decompose forces into r and y components, as necessary. (b) What are ax and ay? (c) Calculate the values of F2tx and F2ty (d) Keeping all z and y components on separate sides of the page, use Newton's...
A book weighing 5 N rests on top of a table.
* A downward force of magnitude 5 N is exerted on the book by
the force of
a.table
b. gravity
c. intertia
* An upward force of magnitude _____ is exerted on the _____ by
the table. Fill in the blanks
* Do the downward force in Part A and the upward force in Part B
constitute a 3rd law pair?
* The reaction to the force in Part A...
Determine the required tension in cable BC if the
resultant of the three forces exerted at Point B is to be
vertical.
The required tension in cable BC is _____N
Determine the corresponding magnitude of the resultant.
The corresponding magnitude of the resultant is _____N
Consider the force system shown in the figure below where P = 530 N. - 840 mm - L= 1160 mm 800 mm B 780 N
The upward normal force exerted by the floor is 620 N on an elevator passenger who weighs 650 N. What is the magnitude of the acceleration? What is the direction of the acceleration? (upward or downward)
Consider the system shown in the figure below. BlockA weighs 43.2 N and block B weighs 29.0 N. Once block B is set into downward motion, it descends at a constant
speed.(a) Calculate the coefficient of kinetic friction between block A and the tabletop.(b) A cat, also of weight 43.2 N, falls asleep on top of block A. If block B is now set into downward motion, what
is its acceleration?magnitudem/s2direction---Select---upward downward
To understand the concept of tension and the relationship
between tension and force. This problem introduces the concept of
tension. The example is a rope, oriented vertically, that is being
pulled from both ends. (Figure 1) Let Fu and Fd (with u for up and
d for down) represent the magnitude of the forces acting on the top
and bottom of the rope, respectively. Assume that the rope is
massless, so that its weight is negligible compared with the
tension....
Three point charges lie along a straight line as shown in the figure below, where q1 = 6.30 µC, q2 = 1.59 µC, and q3 = -2.12 µC. The separation distances are d1 = 3.00 cm and d2 = 2.00 cm. Calculate the magnitude and direction of the net electric force on each of the charges.Three charges lie along a horizontal line. Positive charge q1 is on the left. Positive charge q2 is a distance d1 to the right of...
A book weighing 5 N rests on top of a tablePart AA downward force of magnitude 5 N is exerted on the book by the
force ofPart BAn upward force of magnitude _____ is exerted on the _____ by
the table.Part CDo the downward force in Part A and the upward force in Part B
constitute a 3rd law pair?Part DThe reaction to the force in Part A is a force of magnitude
_____, exerted on the _____ by the...
4. (20 points) What is the resultant force (magnitude and direction) F1+F2 for the figure below (not shown to scale)? Note that |F1) = 60/N, and (F21 = 30V5 N. |F1 = 60 N G F!=30V5 N