Answer:
Height above a surface
Explanation:
Gravitational potential energy is the energy which an object possesses due to its position above a surface.
It is also the amount of work a force has to do in order to bring an object from a particular position to a point of reference.
It is given mathematically as:
P. E. = m*g*h
where m = mass of the body
g = acceleration due to gravity
h = height above a surface
m*g represents the weight of the object.
Hence, Gravitational potential energy is the product of an object's weight and its height above a surface/reference point.
Answer:
0.51 m
Explanation:
from the question we are given the following
weight of the crate = 36 N
weight of the plank = 21 N
distance of of the balance from the left end = 0.3 m
from the diagram attached, CG is the center of gravity ( the point near or within a body through which its weight can be assumed to act ), taking the CG as where the weight of the plank acts and it being at a distance L from the support
we can find the distance of the center of gravity just as we would find the moment about the support balance
therefore
36 x 0.3 = 21 x L
10.8 = 21L
L = 0.51 m
The center of gravity is 0.51 m to the right of the support.
The wave is equation with the given conditions is y = 0.02 cos ( 0 )
<u>Given data</u>
period T= 25.0ms
speed of 30.0 m/s
t = 0
x = 0
transverse position of 2.00cm
speed of 2.0 m/s = v
<h3>writing the wave function </h3>
frequency f = 1 / T
f = 1 / 25
f = 0.04Hz
Angular velocity = ω = 2 * pi * f
ω = 2 * pi * 0.04
ω = 0.251
wave number K = ω / v
k = 0.251 / 2
k = 0.126
The wave equation
y = A cos ( kx + ωt )
this is equivalent to
y = 0.02 cos ( 0.126 * 0 + 0.251 * 0 )
y = 0.02 cos ( 0 )
Read more on wave equation here: brainly.com/question/28167443
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Answer: Both A and B
Explanation:
The objects are in contact so it would depend on the amount of force that is pressing them as to the amount of friction and it would depend on the smoothness as too the amount of friction that is added
Answer:
Explanation:
From the Question we are told that:
Mass 
Coefficient of kinetic friction 
Generally the equation for Frictional force is mathematically given by
Generally the Newton's equation for Acceleration due to Friction force is mathematically given by
Therefore
