We know that the acceleration due to gravity g is: g =
9.81 m/s^2
So the centripetal acceleration (w) is:
w^2 = 1.5 g / r
w^2 = 1.5 * (9.81 m/s^2) / 5 m
w = 1.716 rad / s
To convert to rad to rev:
w = (1.716 rad / s) * (1 rev / 2π rad) * (60 s/min)
<span>w = 16.4 rev/min </span>
The amount of force needed by the truck to move the boulder is 200 N.
<h3>Force:</h3>
This can be defined as the product of mass and acceleration. The S.I unit of force is Newton or kgm/s²
To calculate the newton's of force a block needs to move, we use the formula below.
Formula:
- W = Fd............. Equation 1
Where:
- W = Work done by the truck
- F = Force applied on the boulder
- d = Distance moved by the boulder
Make F the subject of the equation
- F = W/d................. Equation 2
From the question,
Given:
Substitute these values into equation 2
Hence, the amount of force needed by the truck to move the boulder is 200 N.
Learn more about force here: brainly.com/question/12970081
Answer:
a = 7.75 [m/²]
Explanation:
To solve this problem we must use the following equation of kinematics.
where:
x = final distance = 190 [m]
Xo = initial distance = 0
Vo = initial velocity = 0 (car starts from the rest)
a = acceleration [m/s²]
t = time = 7 [s]
190 = 0 + (0*7) + 0.5*a*(7²)
190 = 0.5*49*a
a = 7.75 [m/²]
It is an example of "Elastic Potential Energy"
In short, Your Answer would be Option C
Hope this helps!
Answer:
C) It reacts explosively with oxygen.
Explanation:
Physical properties are usually those that can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor.
What are the Chemical Properties of Hydrogen? They are the characteristics that determine how it will react with other substances or change from one substance to another.
