Ms. Mayo challenged her students to build a pendulum that would hit a block of wood and make it travel the farthest distance. Th
1 answer:
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Answer:
-2.5 m/s²
Explanation:
The acceleration of a body is the change in it's velocity with time.
The change in velocity with time can be obtained as the slope of a velocity time graph ;
Acceleration = (change in velocity / change in time)
Taking the slope :
Change in Velocity = △y = y2 - y1
Change in time = △x = x2 - x1
(10, 15) ; (0, 40)
△y / △x = y2 - y1 / x2 - x1 = (40 - 15) / (0 - 10)
△y / △x = 25 / - 10 = - 2.5 m/s²
Answer:
(a)
(b)
Explanation:
Given:
- density of hydraulic oil,
- radius of input piston,
- radius of output plunger,
- force to be supported,
(a)
<u><em>Condition:</em></u><em>The bottom surfaces of piston and plunger at the same level.</em>
According to Pascal's law the pressure of a fluid is exerted equally in all directions against the walls of its container.
Mathematically:
putting respective values
(b)
<u><em>Condition:</em></u><em>The bottom surface of the output plunger is 1.30 m above that of the input piston.</em>
Given:
Now,