We must all
look for the fg, fn, Ff, and Fnet to get the acceleration.
1 Fg = 28.6
(-9.81)
= 0280.56 n
2 Fn = 280.56 N
<span>3 Ff = μFn</span>
= 0.750 * 280.56
Ff = 210.425 N
4. Fnet = Fa + Ff
= 302 – 210.42
Fnet = 91.576 N
5. F = ma
91.576 = 28.6a
<span>a = 3.2 m/s</span>
Answer:
the circuit must be closed
Explanation:
Answer:
a) Effective resistance when diode was forward biased = 0 Ω
b) Effective resistance when diode was reverse biased = ∞ Ω
Explanation:
Please refer attached characteristic curve for diode.
a) As per the characteristic curve, when the diode was forward biased by 0.7 Volt theoretically infinite current was flowing across the diode.
Hence effective resistance for the diode in forward biased = = 0 Ω
b) As per the characteristic curve, when the diode was reversed biased by 0.7 Volt theoretically zero (0 amp) current was flowing across the diode.
Hence effective resistance for the diode in forward biased = = ∞ Ω
Answer:
a) Fi = 85.76 N
b) Fi = 87.8 N
Explanation:
Given:-
- Density of hydraulic oil, ρ = 804 kg/m^3
- The radius of input piston, ri = 0.00861 m
- The radius of output piston, ro = 0.141 m
Find:-
What input force F is needed to support the 23000-N combined weight of a car and the output plunger, when
(a) the bottom surfaces of the piston and plunger are at the same level
(b) the bottom surface of the output plunger is 1.10 m above that of the input plunger?
Solution:-
For part a.
- We see that both plungers are equal levels or there is no pressure due to elevation head. So we are only dealing with static pressure exerted by the hydraulic oil on both plungers to be equal. This part is an application of Pascal's Law:
Pi = Po
Fi / Ai = Fo / Ao
Fi = Ai / Ao * Fo
Fi = (ri/ro)^2 * Fo
Fi = ( 0.00861 / 0.141 )^2 * 23000
Fi = 85.76 N
For part b.
- We see that both plungers are at different levels so there is pressure due to elevation head. So we are only dealing with static pressure exerted by the hydraulic oil on both plungers plus the differential in heads. This part is an application of Bernoulli's Equation:
Pi = Po + ρ*g*h
Where, h = Elevation head = 1.10m
Fi = (ri/ro)^2 * Fo + ρ*g*h*π*ri^2
Fi = 85.76 + (804*9.81*1.1*3.142*0.00861^2)
Fi = 87.8 N