The pull P is just sufficient to keep the 14-N block and the weightless pulleys in equilibrium as shown. The tension T in the upper cable is:
A) 14 N
B) 28 N
C) 16 N
D) 9.33 N
E) 18.7 N

Question

The pull P is just sufficient to keep the 14-N block and the weightless pulleys in equilibrium as shown. The tension T in the upper cable is: 
A) 14 N 
B) 28 N 
C) 16 N 
D) 9.33 N 
E) 18.7 N

Quizplus · Accepted Answer

Since the 14-N block and the weightless pulleys are in equilibrium, the tension in the cable will be equal to the weight of the block, which is 14 N. Therefore, the answer is choice C.

The Pull P Is Just Sufficient to Keep the 14-N