A lamp with a mass m = 42.6 kg is hanging from wires as shown. The magnitude of tension in the vertical wire is
A) 210 N.
B) 418 N.
C) 570 N.
D) 360 N.
E) 730 N.

Question

A lamp with a mass m = 42.6 kg is hanging from wires as shown. The magnitude of tension  in the vertical wire is 
A) 210 N. 
B) 418 N. 
C) 570 N. 
D) 360 N. 
E) 730 N.

Quizplus · Accepted Answer

The tension in the vertical wire is equal to the weight of the lamp, which is given by:
$T = mg$
$T = (42.6 kg)(9.81 m/s^2)$
$T = 417.5 N$
The closest answer choice to this value is B) 418 N.

A Lamp with a Mass M = 42