Answer:Frequency = 3.525 Hertz
Explanation:In static equilibrium, kd =mg
Where k= effective spring constant of the spring.
mg= The weight of the car.
d= static deflection.
Therefore, w =SQRTg/d
w = SQRT 9.81/0.02
w= 22.15 rad/sec
Converting to Hertz unit for frequency
1 rad/s = 0.1591
22.15rad/s=?
22.15 × 0.1591= 3.525 hertz
Answer:
a) 269.23 N
b) Fr = 70.77 N
c) Work output = 5250 J
d) Work Input = 6630 J
e) Mechanical Advantage
- ideal mechanical advantage = 3.9
- Actual Mechanical Advantage = 3.09
Explanation:
a) In an ideal machine, all the work input is converted to work output.
Work output = F₀ × d₀ = 1050 × 5 = 5250 J
Work input = Fᵢ × dᵢ = 19.5 Fᵢ
19.5 Fᵢ = 5250
Fᵢ = 269.23 N
b) Real effort = 340 N
Since 269.23 N is the force required to lift the 1050 N load in this pulley system, the rest of the 340 N force services frictional forces.
Frictional force = 340 - 269.23 = 70.77 N
c) Output work = Work done by the load = F₀ × d₀ = 1050 × 5 = 5250 J
d) Input Work = Work done by the Effort = Fᵢ × dᵢ = 340 × 19.5 = 6630 J
e) Ideal Mechanical advantage = distance travelled by effort/distance travelled by load
ideal mechanical advantage = 19.5/5 = 3.9
Actual Mechanical Advantage = Load/Effort = 1050/340 = 3.09
Efficiency = Work output/Work input = 5250/6630 = 0.792
<span>LAWS OF MOTION:
The motion of an object parallel to the earth's surface is: Horizontal </span>
Answer:
Explanation:
The formula to find Potential Energy is PE = mgh, where m is the mass of the object, g is gravity, and h is the height from which the object can potentially fall. Because this is linear, then PE will increase as either the mass or the height increase (gravity is constant at 9.8 m/s/s). If the mass of the ball being dropped doesn't change, then the only thing that determines this ball's max PE is the height from which it is dropped; max PE ALWAYS occurs at the highest point from which an object can potentially fall. So your answer is "At the top".