Answer:
The approximate spring constant is
Explanation:
From the question we are told that
The mass of the person is
The dip of the car is
Generally according to hooks law
here the force F is the weight of the person which is mathematically represented as
=>
=>
=>
=>
<span>"prevent the engine from over speeding the armature"
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Answer:
15.67 m/s
Explanation:
The ball has a projectile motion, with a horizontal uniform motion with constant speed and a vertical accelerated motion with constant acceleration g=9.8 m/s^2 downward.
Let's consider the vertical motion only first: the vertical distance covered by the ball, which is S=50 m, is given by
where t is the time of the fall. Substituting S=50 m and re-arranging the equation, we can find t:
Now we now that the ball must cover a distance of 50 meters horizontally during this time, in order to fall inside the carriage; therefore, the velocity of the carriage should be: