In the Figure, a block mi sits on a table. There is static friction between bloc
ID: 1581098 • Letter: I
Question
In the Figure, a block mi sits on a table. There is static friction between block and table. Block m2 hangs from a knot, as shown. Call the tension in the rope connecting the knot to mi, "T1". Call the tension in the rope connecting the knot to m2, "T2". Call the tension in the third rope (the one tipped up by an angle theta, connecting the knot to the wall), "T3". The system is in equilibrium. Which of the following statements are true? (If A and E are true, and the others are not, enter TFFFT) m2 A) The net force on the knot is upwards. B) The tension T2 is smaller than m2 g C) T3 is larger in magnitude than T:1 D) If the table was completely frictionless, the system as shown could not be in equilibrum E) The force of static friction on ml is greater than TI Answer: Submit All Answers Last Answer: TTTTT Not yet correct, tries 4/6 13.[1pt] In the previous problem, block mi weighs 743 N. The coefficient of static friction between the block and the table is 0.24 and the angle theta is 29.3°. Find the maximum weight of block m2 for which block mi will remain at rest.Explanation / Answer
FFTTF
In equilibrium net force = 0
for m2
T2 - W2 = 0
T2 = W
for mass m1
T1 - f = 0
T1 = u*W1
for the knot
along horizontal
T3*costheta - T1 = 0
T3*costheta = u*W1
T3 = u*W1/costheta
along vertical
Fnet = 0
T3*sintheta - T2 = 0
u*W1*sintheta/costheta = T2 = W2
W2 = us*W1*tantheta
W2 = 0.24*743*tan29.3
W2 = 100 N <<<--------ANSWER