Answer:
velocity of the metal cylinder = 0.343 m/s
Explanation:
Force putting the metal cylinder is given by
F = mv²/r
But this force will balance the frictional force between the metal cylinder and the turntable
The frictional force is given by
μN = μ × mg = 0.08 × 0.2 × 9.81 = 0.15696 N
r = 0.15 m, m = 0.2 kg,
F = mv²/r = 0.2 v²/(0.15) = 1.3333 v²
1.3333 v² = 0.15696
v² = 0.117
v = 0.343 m/s
Answer:
1863 J
Explanation:
F = Force moving the object
f = Frictional force = 230 N
The forces in the horizontal direction have the force balance
So, the force by which the object is being pushed is
s = The displacement of the object = 8.1 m
Work done is given by
The work done by the mover is 1863 J.
Answer:
The signal will move down by 1 division
Explanation:
We have two signals here:
- An AC signal (sine wave), centered at 0 V, with amplitude 2 V (it means that it goes from a maximum of +2 V to a minimum of -2 V)
- A DC signal, which appears in the oscilloscope as a flat line, of 1 V
If we add these two signals together, we are adding a constant offset of +1 V to the sine wave, so the sine wave will move up by one division
Now, if we readjust the position so the trace is centered again at 0 V, we are moving the signal down by 1 division
Then, if we switch the signal in channel B from DC to AC, we are removing the constant offset of 1 V - so the signal will be now centered at -1 V. Therefore, the signal will move down by 1 division.