A child kicks a rock off the side of a hill at an angle of elevation of 60 ° . The hill slopes downward 30 ° from the horizontal. Consider a coordinate system in which the origin is the point on the edge of the hill from which the rock is kicked. The path of the rock and the line of declination of the hill can be approximated by y = − x 2 36 + 3 x Path of the rock y = − 3 3 x Line of declination of the hill Solve the system to determine where the rock will hit the ground.
A child kicks a rock off the side of a hill at an angle of elevation of 60 ° . The hill slopes downward 30 ° from the horizontal. Consider a coordinate system in which the origin is the point on the edge of the hill from which the rock is kicked. The path of the rock and the line of declination of the hill can be approximated by y = − x 2 36 + 3 x Path of the rock y = − 3 3 x Line of declination of the hill Solve the system to determine where the rock will hit the ground.
A child kicks a rock off the side of a hill at an angle of elevation of
60
°
.
The hill slopes downward
30
°
from the horizontal. Consider a coordinate system in which the origin is the point on the edge of the hill from which the rock is kicked. The path of the rock and the line of declination of the hill can be approximated by
y
=
−
x
2
36
+
3
x
Path of the rock
y
=
−
3
3
x
Line of declination of the hill
Solve the system to determine where the rock will hit the ground.
System that uses coordinates to uniquely determine the position of points. The most common coordinate system is the Cartesian system, where points are given by distance along a horizontal x-axis and vertical y-axis from the origin. A polar coordinate system locates a point by its direction relative to a reference direction and its distance from a given point. In three dimensions, it leads to cylindrical and spherical coordinates.
The bracket BCD is hinged at C and attached to a control cable at B. Let F₁ = 275 N and F2 = 275 N.
F1
B
a=0.18 m
C
A
0.4 m
-0.4 m-
0.24 m
Determine the reaction at C.
The reaction at C
N Z
F2
D
The correct answer is C,i know that we need to use stokes theorem and parametrize the equations then write the equation F with respect to the curve but i cant seem to find a way to do it, the integral should be from 0 to 2pi but i might be wrongcould you show me the steps to get to 18pi
A 10-ft boom is acted upon by the 810-lb force as shown in the figure.
D
6 ft
6 ft
E
B
7 ft
C
6 ft
4 ft
W
Determine the tension in each cable and the reaction at the ball-and-socket joint at A.
The tension in cable BD is
lb.
The tension in cable BE is
lb.
The reaction at A is (
lb) i +
Ib) j. (Include a minus sign if necessary.)
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