Tra Strong
On planet Tehar, the free-fall acceleration is the same as as that of Earth (stumped by this question)?
On planet Tehar, the free-fall acceleration is the same as as that of Earth, but there is also a strong downward electric field that is uniform close to the planet’s surface. A 2.22 kg ball having a charge of 3.66 μC is thrown upward at a speed of 17 m/s, and it hits the ground after an interval of 4.38 s.2
The acceleration of gravity is 9.8 m/s .
What is the potential difference between the starting point and the top point of the tra jectory?
Answer in units of kV
If it was just the gravity the time in the air would be about 3.4 s
So the electric field is Upwards for the positive charge
17 = a . 2.19
a = 7.76 m/s/s
E . e = M ( g – a ) = 2.22 . 2. 04 = 4.5 N
E = 4.5 / 3.66 10^–6 = 1.24 . 10^6 V/m
Height reached = V^2 / 2a = 17^2 / 2 . 7.76 = 18.62 m
PD = 23 . 10^6 Volts = 23000 kV
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