A seesaw is an example of a first class lever, true or false?
1 answer:
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The magnitude of the frictional force is B) 300 N
Explanation:
For this problem, we just have to consider the forces acting on the box in the horizontal direction.
There are only two forces in this direction:
- The pull applied by the man, of magnitude F=300 N, forward
- The frictional force, , acting backward
So the equation of motion for the box is
where
m is the mass of the box
a is its acceleration
However, the box is at rest, so its acceleration is zero:
a = 0
This means therefore that
And so the magnitude of the frictional force is equal to the pulling force:
Learn more about friction:
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Answer:
the net force on the object is 6 N.
Explanation:
Given;
force applied to the right on the object, = 16 N
force applied to the left of the object, = 16 N
force applied downward on the object, = 6 N
The net horizontal force on the object =
The net vertical force on the object =
The net force on the object is calculated as;
Therefore, the net force on the object is 6 N.
Answer:
94.248 g/sec
Explanation:
For solving the total current of the blood passing first we have to solve the cross sectional area which is given below:
And, the velocity of blood pumping is 30 cm^2
Now apply the following formula to solve the total current
Q = 94.248 g/sec
Basically we applied the above formula So, that the total current could come