Let's apply an equation of equilibrium to the situation: The sum of the moments about the left end of the board must equal 0.
We have three moments to add. Positive force values indicate upward direction and negative values indicate downward direction. All distances given below are measured to the right side of the left end of the board:
- The weight of the board, -125N, located at 2m (center of the board due to its uniform density)
- The tension in the right chain, +250N, located at 4m
- The weight of the person, -500N, located at a distance "x"
The sum of the moments must equal 0 and is given by:
ΣFx = 0
F is the magnitude of force, x = distance from the left end of the board
Plug in all of the force and distance values and solve for x:
ΣFx = 250(4) - 125(2) - 500x = 0
500x = 750
x = 1.5m
Hello,
This is true. Net force can be calculated using the equation F = ma, where f is net force, m is mass, and a is acceleration. Simply multiply mass and acceleration to obtain the net force being exerted on the object.
True
Hope this helps!
Answer:
The tea is warming up us is because of process of convection.
Explanation:
The conduction is the process in which the heat transfers within the material like heating up metal rod.
The radiation can be defined transfer of energy from body in the form of particles or wave like radiation from nuclear bomb.
The convection is the process of heat transfer by the movement of warm gas or liquid in which warm air rise and cool air sink.
Here when tea when we swallow tea the motion of molecules in the tea rise and there is transfer of heat.
