Answer:
F. 
Explanation:
Here in the question the mass of the pulley is zero, hence, the tension in the cable throughout is same. 
magnitude of tension in rope 1 is 
T1= F 
Hence the tension T1 is rope 1 is F. 
 
        
                    
             
        
        
        
The weight is 45 N, because the three chains hold the sign, and each contributes 15 N.
Notice that the mass would be the weight/acceleration of gravity, m = 45/9.8 kg. But they ask the weight (force, so Newtons)
        
             
        
        
        
Answer:
took longer to complete one oscillation, that means its PERIOD increased, and the distance between the peaks of the graph would be longer.
 line would be less. the period of oscillation would have any effect on the graph
 
        
                    
             
        
        
        
Peer review is important because it is used by scientists to decided which results should be published in a scientific journal
        
                    
             
        
        
        
The work done is by the centripetal force on mass m during an angular displacement of 2π revolutions mv²2π /r J
Centripetal force - a force acts on an moving object in circular path.
the centripetal force is given by 
F= mv²/r       (equation1)
Work done is given by 
W = Fd          (equation 2) 
d = 2π
work is done by the centripetal force on mass m during an angular displacement of 2π revolutions is given by:
to calculate work done using equation 1 in 2  we get
W = mv² d/r
  W = mv² × 2π /r J
The work done is by the centripetal force on mass m during an angular displacement of 2π revolutions mv²2π /r J
To know more about centripetal force :
brainly.com/question/13031430
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