For Exercises 65-68, find the work w done by a force F in moving an object in a straight line given by the displacement vector D. (See Example 6) F = 40 i − 15 j lb ; D = 30 i + 10 j ft
For Exercises 65-68, find the work w done by a force F in moving an object in a straight line given by the displacement vector D. (See Example 6) F = 40 i − 15 j lb ; D = 30 i + 10 j ft
For Exercises 65-68, find the work w done by a force F in moving an object in a straight line given by the displacement vector D. (See Example 6)
F
=
40
i
−
15
j
lb
;
D
=
30
i
+
10
j
ft
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
You are on a rollercoaster, and the path of your body is modeled by a vector function r(t),
where t is in seconds, the units of distance are in feet, and t = 0 represents the start of the
ride. Assume the axes represent the standard cardinal directions and elevation (x is E/W, y
is N/S, z is height). Explain what the following would represent physically, being as specific
as possible. These are all common roller coaster shapes/behaviors and can be explained in
specific language with regard to units:
a. r(0)=r(120)
b. For 0 ≤ t ≤ 30, N(t) = 0
c. r'(30) = 120
d. For 60 ≤ t ≤ 64, k(t) =
40
and z is constant.
e.
For 100 ≤ t ≤ 102, your B begins by pointing toward positive z, and does one full
rotation in the normal (NB) plane while your T remains constant.
The figure shows a potted plant acted on by four forces. Evaluate the vector
product between forces 2 and 3 if 0 = 68°, 140, F₁ = 12 N, F₂ = 18 N.
F3 = 11 N, and F4 = 19 N.
For the direction, indicate a vector product out of the screen as positive and a
vector product into the screen as negative.
F₁.
F₂
Suppose that the force acting on an object can be
expressed by the vector (85, 35, 110), where
each measure in the ordered triple represents the
force in pounds. What is the magnitude of this
force? Round your answer to two decimal
places. Show your work.
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Area Between The Curve Problem No 1 - Applications Of Definite Integration - Diploma Maths II; Author: Ekeeda;https://www.youtube.com/watch?v=q3ZU0GnGaxA;License: Standard YouTube License, CC-BY