All of the following steps are included in a self-modification program except __________. A. specifying target behavior B. desig
2 answers:
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Answer:
Explanation:
First of all, we analyze the vertical direction.
Along this direction, the object is in equilibrium, so its acceleration is zero, and therefore the net force on it is zero. There are only two forces acting on the object vertically: the weight, W (downward), and the normal force, N (upward), and since the net force must be zero, we can write
And since N = 60 N, the weight of the object is
W = 60 N
From this, we can also find the mass of the object, using the equation:
where is the acceleration of gravity.
Now we analyze the forces along the horizontal direction. We have:
A pulling force of F=100 N forward
A frictional resistance of backward
So the equation of motion in this direction is
And solving for a, we find the acceleration of the object:
in the horizontal direction, forward.
Explanation:
It is given that,
Initial speed, v₁ = 14 m/s
Initial force, F₁ = 130 N
We need to find the total horizontal force (F₂) on the driver if the speed on the same curve is 18.0 m/s instead, v₂ = 18 m/s
The centripetal force is given by :
So, if the speed is 18 m/s, then the horizontal force acting on the car is 214.8 N. Hence, this is the required solution.