PHYSICS
JAMB 2022 - Question 16
Physics 2022 JAMB Past Questions - Question 16: A nail is pulled from a wall with a string tied to the nail. If the string is inclined at an angle of 30 degrees to the wall and the tension in the string is 50N, the effective force used in pulling the nail is:
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
A
Explanation
To find the effective force used in pulling the nail, we can use trigonometry. The force pulling the nail can be found using the equation:
Force = Tension in the string * sin(angle)
Where:
Tension in the string = 50N
Angle = 30 degrees
So, the effective force used in pulling the nail is:
Force = 50N * sin(30°)
Force = 50N * 0.5
Force = 25N
Therefore, the effective force used in pulling the nail is 25N.
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