Answer:34.3 N and 15.7 N
Explanation:
= force on the left end of the rod
= force on the right end of the rod
M = mass of Halloween decoration = 3 kg
= weight of the Halloween decoration = Mg = 3 x 9.8 = 29.4 N
m = mass of rod = 2.1 kg
= weight of the rod = mg = 2.1 x 9.8 = 20.6 N
From the force diagram, using equilibrium of torque about A
(AB) + (AC) = (AD)
(29.4) (21) + (20.6) (57) = (114)
= 15.7 N
Using equilibrium of force along the vertical direction
+ = +
15.7 + = 29.4 + 20.6
= 34.3 N
Step-by-step explanation:
We have
![\left \{ {{2a=8} \atop {a+b=2}} \right.](https://tex.z-dn.net/?f=%20%5Cleft%20%5C%7B%20%7B%7B2a%3D8%7D%20%5Catop%20%7Ba%2Bb%3D2%7D%7D%20%5Cright.%20)
First we are taking first equation, and we are solving it
2a=8 /:2 divide both sides by 2
a=4
Now we can backsubstitute a=4
a+b=2
4+b=2 /-4 (subtract 4 both sides)
4+-4+b=2-4
b=-2
The final answer is
So for 4 cans of beans for $9, each can would be $2.25 so then we multiply that by 7 so it would be $15.75 for 7 cans of beans
Answer:
between 31 and 29 classes
Step-by-step explanation: