In the figure,what does the spring scale read? The pulleys are ideal and the strings and scale are also massless.
A)exactly 2.0 N.
B)exactly 1.0 N
C)0.50 N
D)0.00 N
E)more than 19.6 N

Question

In the figure,what does the spring scale read? The pulleys are ideal and the strings and scale are also massless. 
A)exactly 2.0 N. 
B)exactly 1.0 N 
C)0.50 N 
D)0.00 N 
E)more than 19.6 N

Quizplus · Accepted Answer

Since the pulleys and strings are massless and the system is in equilibrium, the tension in both strings must be equal. Therefore, the force exerted by string on spring scale is 1 N.

In the Figure,what Does the Spring Scale Read? the Pulleys