Friction is the force that acts on the opposite side of direction of force, thus it manages to decelerate an object, so it acts upward along the plane
Answer:
a The speed of the plane is
b The altitude of the plane is
Explanation:
Let the altitude of the plane is Z
The distance at which the plane hears the horn is
The time taken for the sound to reach the plane is
The speed of sound is
The distance from the point the plane hears the sound to the boat is mathematically evaluated as
substituting values
This is the diagonal distance of the boat to the plane (hypotenuse)
The altitude of the plane is the vertical distance of the plane from the boat
and the horizontal distance of the plane from the boat is d
Applying Pythagoras theorem
=>
substituting values
=>
=>
=>
=>
Now the velocity of the plane is
(a) The mechanical advantage of the ramp is determined as 2.5.
(b) The pulley provides additional advantage since it assisted the boy in pulling up the load.
<h3>
What is mechanical advantage?</h3>
The mechanical advantage of an object is the ratio of output force to input force, hence it is called force ratio.
<h3>Mechanical advantage of the ramp</h3>
M.A = Lp/h
where;
- Lp is the length of the inclined plane
- h is height of the inclined plane
M.A = 10/4
M.A = 2.5
Learn more about mechanical advantage here: brainly.com/question/25984831
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Answer:
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Explanation: