So obviously the 20N pulls more than the 5N. Friction opposes direction of motion, so the 5N opposes the 20N and the two forces are against each other.
Net force would be in the direction of the 20N force: 20N - 5N = 15N.
Force = mass*acceleration
15 = (5)*acceleration
acceleration = 3m/s^2
Answer:
The magnetic flux is generated when there is change in the magnitude of the magnetic field as well as its direction. ... If the magnetic field is parallel to the place of the area exposed then the magnetic flux generated is zero when the magnetic field is not zero.
_Askmeanything2♡
Answer:
Explanation:
Distance remaining after reaction time
s = s₀ - v₀t
s = 100 - 12(0.55) = 93.4 m
v² = u² + 2as
a = (v² - u²)/2s
a = (0² - 12²) / 2(93.4) = - 0.770877944...
|a| = 0.77 m/s²
The power needed is 0.0054 hp
Explanation:
First of all, we need to convert the mass from pounds to kilograms:
Then we have to convert the height from feet to meters:
The weight of the object is:
Now we can calculate the work needed to lift the box, which is equal to the change in gravitational potential energy of the object:
The power required to lift the object is given by:
where
W = 40.5 J is the work done
t = 10 s is the time taken
Substituting,
And finally, we can convert into horsepower, keeping in mind that
1 hp = 746 W
We find
Learn more about power:
brainly.com/question/7956557
#LearnwithBrainly
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