Answer:F=0.0882kg
Explanation:
The period it takes to make one revolution is 1.5 seconds / revolutions,
v = r * (change in angle / change in time)
the change in angle is 2pi, for one whole revolution. the time is 1.5 second per revolution, and the radius is 0.1.
v = (2 * pi * 0.1 cm * / 1.5second
v = 0.42m/s
a=v^2/r
a=0.42^2 /0.1 =1.764m/s2
F=ma
F=0.05*1.764
F=0.0882kg
Vf = Vi + at
Vf = 0 + 5.4•28
= 151.2m/s..
not sure if its right
Answer:
132 W
Explanation:
Efficiency = power out of generator / power into generator
0.6 = P / 220 W
P = 132 W
Answer:
105 kg.m/s
Explanation:
Formula for change in momentum is given as;
ΔP = m(v - u)
We are given;
Mass; m = 35 kg
Initial velocity; u = 3 m/s
Final velocity; v = 6 m/s
Thus;
ΔP = 35(6 - 3)
ΔP = 35 × 3
ΔP = 105 kg.m/s
