1 answer

015:- A 9.00-kg hanging weight is connected by a string over a pulley to a 5.00-kg...

Question:

015:- A 9.00-kg hanging weight is connected by a string over a pulley to a 5.00-kg block that is sliding on a flat table Fig. If the coefficient of kinetic friction is 0.200, find the tension in the string. (A)39.2N (B38.57N (C)37.23N (D)34.55N (E)35.66N

015:- A 9.00-kg hanging weight is connected by a string over a pulley to a 5.00-kg block that is sliding on a flat table Fig. If the coefficient of kinetic friction is 0.200, find the tension in the string. (A)39.2N (B38.57N (C)37.23N (D)34.55N (E)35.66N

Answers

writing the force equation we have

9g - T = 9a --------(1)

T - 0.2*5*g = 5a -----(2)

adding both equations we have

8g = 14a

a = 5.6 m/s2

T = 9(g - a) = 9 (9.8 - 5.6) = 37.8 N

so ooption C) 37.23 N is the closest and is the correct answer

.

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