0 6. 1 State what is represented by gravitational field lines - AQA - A-Level Physics - Question 6 - 2017 - Paper 2
Question 6
0 6 . 1 State what is represented by gravitational field lines. [1 mark]
0 6 . 2 Figure 6 shows the gravitational field above a small horizontal region on the surfa... show full transcript
Worked Solution & Example Answer:0 6. 1 State what is represented by gravitational field lines - AQA - A-Level Physics - Question 6 - 2017 - Paper 2
Step 1
State what is represented by gravitational field lines.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Gravitational field lines show the direction (and relative magnitude) of force acting on a mass placed in the field. Alternatively, they can represent the direction a stationary mass would experience.
Step 2
Suggest why the field lines converge over a small area at K.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The field lines are closer together at point K; this indicates that the gravitational field is stronger in that region. The convergence suggests an increase in the strength of the gravitational field as it comes closer to K.
Step 3
Explain any change in the speed of the ball as it approaches K.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
As the ball approaches K, it will experience a change in potential energy due to the gravitational field. Since the ball is moving in a gravitational field, it will accelerate downward as it approaches K, thus increasing its speed.
Step 4
Explain why the lines of force shown in Figure 7 cannot represent a gravitational field.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The lines of force in Figure 7 diverge from both charged objects L and M, indicating repulsion in some regions; this cannot occur in a gravitational field, which should always show attraction.
Step 5
State which object L or M has a charge with the greater magnitude.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Object L has a charge with the greater magnitude.
Step 6
State which object L or M has a positive charge.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Object L has a positive charge.
Step 7
Draw, on Figure 7, an equipotential line that passes through point N.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The equipotential line should be drawn as a straight line that runs horizontally through point N. It must not extend beyond the field lines, maintaining symmetry to the left and right of N.
