A picture hangs on the wall suspended by two strings, as shown in the

figure, with θ = 65°. The tension in string 1 is 1.3 N.
(a)Is the tension in string 2 greater than, less than, or equal to the tension in string 1? Explain.
(b) Verify your answer to part (a) by calculating the tension in string 2
(c) What is the weight of the picture?

4 answers

A baseball player slides into third base with an initial speed of 7.75 m/s. If the coefficient of kinetic friction between the player and the ground is 0.45, how far does the player slide before coming to rest?
1. Are the two strings tied to the same point on the wall?

2. a = u*g = 0.45 * (-9.8)=-4.41 m/s^2.

V^2 = Vo^2 + 2a*d.
V = 0.
Vo = 7.75 m/s.
a = 4.41 m/s^2.
Solve for d.
1a. 1.3*Cos(180-65) = -T2*Cos65.
-0.549 = -0.423T2.
T2 = 1.30 N.

The Tensions are equal because the angles are equal.
Ti*sin(180-65) + T2*sin65 = -Wp*sin270.
1.3*0.90631 + 1.3*90,631 = Wp.
Wp = 2.36 N. = Wt. of picture.