Answer:
Incomplete question: The masses of the blocks m₂ = 1.5 kg and m₃ = 2 kg
Explanation:
Given data:
L₁ = length = 0.85 m
L₂ = 0.25 m
L₃ = 0.5 m
m₂ = 1.5 kg
m₃ = 2 kg
Question: Find the unknown mass of the block 1 needed to balance the bar, m₁ = ?
The torque is zero (intermediate point of the bar)
Is negative because mass 1 is to the left of the coordinate system (see the diagram)
Answer:
29.448
Explanation:
first determine the distance from the top of the roof to the friends head.
Since he is 1.80 min height ,
distance = 46.0-1.80
= 44.2 m
egg is dropped from rest means that its starting velocity is zero. It has to travel 44.2 m subjected to the gravitational acceleration
Applying Motion equation
where v= end velocity (speed)
u=Starting velocity
a= acceleration
s= Distance
(Let gravitational acceleration assumed as