Answer:
150 N
Explanation:
The question says that, "A hydraulic forklift is used to lift boxes with a weight of 1500 newtons over a surface of 20 cm squared. What is the force applied to a base of 2 cm squared?"
Given that,
Force applied, F₁ = 1500 N
Area, A₁ = 20 cm²
We need to find the force applied to a base of 2 cm². Using Pascal's law to find it such that,
So, the required weight is 150 N.
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Answer:90N
Explanation:
Mass=30kg
Centripetal acceleration=3m/s^2
centripetal force=mass x centripetal acceleration
Centripetal force=30 x 3
Centripetal force =90
Centripetal force =90N
For the work-energy theorem, the work done by the engine on the car is equal to the variation of kinetic energy of the car:
where m=1167 kg is the mass of the car,
is the initial speed and
is the final speed.
Putting numbers into the equation, we find:
