Answer:
Frequency
Explanation:
A periodic oscillation can be described by using different quantities. The most important are:
- Amplitude: the maximum displacement of the oscillation, relative to its equilibrium position
- Period: the time it takes for the system to complete one full oscillation
- Frequency: the number of complete cycles the oscillation makes per second
From the definitions above, we see that the quantity that the problem is asking for is the frequency. Frequency is also related to the period by the equation
where T is the period of oscillation.
Answer: 1.274 N minimum force required to slide the book across the surface
Explanation:
Mass of the book = m = 0.2 kg
Normal force acting on the book,N = mg
Coefficient of friction = = 0.65
Minimum force required to slide the book across the surface= F
1.274 N minimum force required to slide the book across the surface
a) See free-body diagram in attachment
b) The acceleration is
Explanation:
a)
The free-body diagram of an object is a diagram representing all the forces acting on the object. Each force is represented by a vector of length proportional to the magnitude of the force, pointing in the same direction as the force.
The free-body diagram for this object is shown in the figure in attachment.
There are three forces acting on the object:
b)
In order to find the acceleration of the object, we need to write the equation of the forces acting along the direction parallel to the incline. We have:
where:
is the applied force, pushing forward
is the frictional force, acting backward
is the component of the weight parallel to the incline, acting backward, where
m = 2 kg is the mass of the object
is the acceleration of gravity
is the angle between the horizontal and the incline (it is not given in the problem, so I assumed this value)
a is the acceleration
Solving for a, we find:
Learn more about inclined planes:
#LearnwithBrainly
