Answer:
option C
Explanation:
the correct answer is option C
When in a confined fluid the pressure is increased in one part than the pressure will equally distribute in the whole system.
According to Pascal's law when pressure is increased in the confined system then the pressure will equally transfer in the whole system.
This law's application is used in machines like hydraulic jacks.
The force of gravity changes as the mass of one object doubles. As the mass of one object is doubled then the force between the objects also gets doubled.
Force is an influence which can change the motion of an object through the application of an external force. A force can cause an object with the mass to change its velocity, that is the object undergo acceleration.
Force is directly proportional to the mass of the object and the acceleration of the object. If we double the mass of one of the objects, then we double the strength of the force. If we double the masses of both the objects, then we quadruple the strength of force.
Learn more about Force here:
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b) What are the magnitude and direction of the velocity of the car at t= 8 sec?
c) What is the magnitude and direction of cars acceleration at t=8 sec
Part a)
Equation of position with time is given as
since this equation is a quadratic equation
so it will be a parabolic graph between t = 0 to t = 1
part b)
at t = 0.45 s
at t = 0.55 s
now the displacement is given as
so the average velocity is given by
part c)
at t = 0.49 s
at t = 0.51 s
now the displacement is given as
so the average velocity is given by
Answer:
The answer is below
Explanation:
a) The location ӯ of the center of mass G of the pendulum is given as:
b) the mass moment of inertia about z axis passing the rotation center O is:
c) The mass moment of inertia about z axis passing the rotation center O is:
To solve this problem, calculate the mass of each element of the pendulum, use that information to determine the center of mass, and then apply the parallel axis theorem to calculate the two moments of inertia.
To determine the center of mass and the mass moment of inertia of the pendulum, first we calculate the individual masses of the rods: AB and OC, and the plate. Each rod has a mass of 2 kg (given mass per unit length is 3kg/m and length of each rod is 1 m from the first reference paragraph).
The center of mass ӯ can be determined using the formula for center of mass, averaging distances to each mass element weighted by their individual masses. The mass moment of inertia, also known as the angular mass, for rotation about the z axis through G is determined using the parallel axis theorem, which states that the moment of inertia about an axis parallel to and a distance D away from an axis through the center of mass is the sum of the moment of inertia for rotation about the center of mass and the total mass of the body times D squared.
Finally, the moment of inertia about the z axis passing through the center of rotation O can be calculated again using the parallel axis theorem, with distance d being the distance between points G and O.
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Answer:
Explanation:
vf=vi+at
vf=31 m/s
vi=0 m/s
a=g=9.8 m/s2
t=?
vf-vi=at
vf-vi/a=t
t=vf-vi/a
t=31 m/s-0/9.8
t=3.16 s
Answer:
Explanation:
As the current density is given as
now we have current inside wire given as
Now by Ampere's law we will have