The coefficient of friction is 0.213
Explanation:
We start by writing the equation of the forces along the directions parallel and perpendicular to the incline. We have:
Perpendicular direction:
(1)
where
N is the normal reaction of the plane
is the component of the weight perpendicular to the plane, with
m is the mass
g = 9.8 m/s^2 the acceleration of gravity
is the angle of the incline
Parallel direction:
(2)
where
:
is the component of the weight parallel to the slope
is the force of friction, where
is the coefficient of friction
N is the normal reaction
a is the acceleration
In this case, the skier is moving at constant speed, so its acceleration is zero and the equation becomes:
(2)
From (1) we find
And substituting into (2)
Solving for ,
Learn more about slope and force of friction here:
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Answer:
a magnet is a material with a North and South pole
We know that by Hooke's Law,
F = kx; where F is the net force on the spring, k is the spring constant and x is the extension.
We are told that all the springs have the same spring constant as the first, so we first calculate its spring constant.
F = ma = 4.1 × 9.81
= 40.2 Newtons
k = 40.2 ÷ 0.13
k = 309 Newtons / m
Now, for the spring under consideration, the mass is
m2 = 12.3 kg
The net force will be the difference of the downward force of the mass's weight and the upward force of the elevator. Thus,
F = 12.3 × 9.81 - 12.3 × 4.2
F = 69 Newtons
x = 69 ÷ 309
x = 0.22 m = 22 cm
Answer:
differences:
The resolution. A micrometer provides smaller resolution compared to calipers. A micrometer can measure down to 0.001mm (micron size), while a caliper can measure down to 0.02 only in general. Resolution is the smallest increment that can be measured.
Range. A micrometer has different ranges. The most used range is 1 inch. However, there are available in 2inch, 3inch, 4inch, 5inch, 6inch, etc. While a caliper has a fairly uniform size.
How They Work. The way mechanical works is by the help of the differential screw mechanism, while the vernier caliper uses vernier scale. The digital micrometers also work differently from the digital calipers.
similarities:
Both are simple to use and easy for measurement.
Both Vernier caliper and micrometer screw gauge might have zero error to some extent. However, the zero error can be calculated and removed.
Both have ability to measure small dimensions
Explanation:
Hope it helps and have a great day/night! ^w^
