Answer:
Explanation:
Given that,
Small piston Hydraulic piston has an area
A1 = 0.01m²
If the force applied is 250N is applied to the small piston at an area of 0.05 m²
Then,
F2 = 250 N and A2 = 0.05m²
Then, applying pascal principle,
Pressure at small area = pressure are bigger area
P1 = P2
F1 / A1 = F2 / A2
F1 / 0.01 = 250 / 0.05
F1 / 0.01 = 5000
Cross multiply
F1 = 5000 × 0.01
F1 = 50 N
<span>A 67.0 kg crate is being raised by means of a rope. Its upward acceleration is 3.50 m/s2. What is the force exerted by the rope on the crate?
</span>Newton's Second Law<span> of Motion states, “The force acting on an object is equal to the mass of that object times its acceleration.” We calculate as follows:
</span>
F = ma = 67.0 kg (3.50 m/s^2) = 234.5 J
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Answer: The nearest position of an object from a normal human eye so that its image is formed on retina is 25 CM. If the object is placed at a distance less than 25 CM, then the blurred image of the object is formed on retina as the focal length of a lens cannot be decreased below a certain limit. Hence we cannot see it clearly.
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Answer: The 5 uses of mechanical energy are: 1) Hammering a nail
2) Using Dart gun 3) Moon 4) Hydropower plant 5) Sharping a pencil.