What does a refractory period prevent
1 answer:
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Answer:
μk = 0.08
Explanation:
- Applying the work-energy theorem, we know that the change in kinetic energy of the box, is equal to the total work done on it.
- The only force acting on the box capable of doing work, is the dynamic friction force.
- This force is just the product of the coefficient of kinetic friction, and the normal force.
- In this case, if the floor is level, the normal force is equal and opposite to the gravity force, Fg.
- So we can write the following expression:
- Replacing by the givens, we can solve for μk, as follows:
Answer:
F = 1958.4 N
Explanation:
By volume conservation of the fluid on both sides we can say that volume of fluid displaced on the side of the car must be equal to the volume of fluid on the other side
so we have
so the car will lift upwards by distance 1.2 m and the other side will go down by distance 15.55 m
So here the net pressure on the smaller area is given as
excess pressure exerted on the smaller area is given as
now the force required on the other side is given as