The frequency is the number of complete oscillations per second. One complete oscillation corresponds to 1 push. Converting the time into seconds:
we can find the frequency of the swing:
we can find the frequency of the swing:
A spring whose stiffness is 1140 n/m has a relaxed length of 0.51 m. if the length of the spring changes from 0.26 m to 0.79 m,
1 answer:
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Answer:
9.4 N
Explanation:
m = mass of the book = 1.83 kg
= Coefficient of static friction = 0.522
= Coefficient of kinetic friction = 0.283
= Static frictional force
F = force needed to make the book move
force needed to make the book move is same as the magnitude of maximum static frictional force applied by the desk on the book
Static frictional force is given as
=
mg
Hence, the force need to move the book is given as
F = =
mg
F = mg
F = (0.522) (1.83 x 9.8)
F = 9.4 N
Answer:
0.82 m
Explanation:
We are given that
Weight,=225 N
Length,l=5 m
d=1.1 m
We have to find the distance x for which person weighs 385 N walk on the overhanging part of the plank before it just begins to tip.
Half length=
When system in equilibrium then