Question

find the magnitude of force exerted by string on pulley

Answer 1

here is Ur ans .....in the end I have used magnitude of resultant vector

Answer 2

SOLUTION

T = mg

T = 10 × 10

$\sf\pink{\fbox{T = 100N}}$

By Using Vector law of Addition

$\sf\bold\blue{R = \sqrt{T² + T² + 2T²Cos90°}}$ [ Cos90° = 0 ]

$\sf{⇒ \sqrt{(100)²+ (100)²}}$

$\sf\bold\pink{R = 100\sqrt{2}}$

Therefore , Force Exerted by string on pulley is $\sf\bold\green{100\sqrt{2}}$.