please answer this it is urgent
Attachments:
Answers
Answered by
0
The centre of gravity of the ruler is at 50 cm
Mass of the stick is 250 g
Let the distance from pivot be d
Work = force * displacement
= 250 g * d
Now this force acts anticlockwise.
Now the work done by 100 g force is;
= 100 g * 20 cm
= 2000 g cm clockwise
Sum of clockwise moments = Sum of anticlockwise moments
==> 250 d = 2000 cm
==> d = 2000 cm / 250
==> d =8 cm
The answer is Option C
Hope it helps
___________________________________________________
eshwarkarthikeya:
why the centre of gravity is at 50cm
centre of gravity is always at the centre of the scale
centre of 100 cm scale is at 50 cm so cg at 50 cm
Similar questions