what is mass of metre time which is in equilibrium

Asked by suneelmsc | 14th Jul, 2020, 01:36: PM

Expert Answer:

Let the mass of the ruler be m. 
From the given diagram and given information it is clear that the midpoint is 50 cm 
Thus, 
Clockwise moment = (50 -30) x m = 20 x m
Anticlockwise moment = (30 - 5) x 40 = 25 x 40 
 
By principle of moments, 
Clockwise moment = Anticlockwise moment
Thus, 
20 x m = 25 x40
m = 50 g 
 
Hence, the mass of the ruler is 50 g 

Answered by Shiwani Sawant | 14th Jul, 2020, 02:30: PM