Question

The magnitude of resultant of three vector is 7N. Its x-component is 3N, y-component is
6N. Then its z-component will be newton
A 0
b 1
c 2
d 4​

Answer 1

Answer:

answer is option c

Explanation:

as per the given details, we can write like this,

• 7=√(x^2+y^2+z^2)
• 7=√(3^2+6^2+z^2)
• 7=√(9+36+z^2)
• 7=√(45+z^2)
• (7)^2=(√(45+z^2). { squaring on both sides}
• 49=45+z^2
• 49-45=z^2
• 4=z^2
• z=√4=2

hope it helps you...