QUESTION 1 A light bar can rotate around the pivot point O as shown in the picture (click on the link below). https://www.dropbox.com/s/z8nbzzizbecexmt/Screen%20Shot%202022-11-24%20at%209.31.12%20AM.png?dl=0 The mass m1 = 487 gram is attached at a distance OA of 0.13 m to the left from the pivot point O. The mass m2 = 485 gram is attached at a point B to the right from the pivot point O. Find the distance OB from the pivot point O to point B if the bar is in rotational equilibrium. Give your answer in meters (m).QUESTION 2 A box with a mass m1=3.1 kg is attached to a box with a mass m2=9.4 kg by rope 1. The box with the mass my is pulled by rope 2 with a force of 249 N. Both boxes are sliding without friction on a horizontal table as shown in the associated figure. Please click on the link below to see the picture: https://www.dropbox.com/s/vr7qmolm7kekq06/Screen%20Shot%202022-11-24%20at%2010.44.32%20AM.png?dl=0 What is the tension in rope 1? Give your answer in Newtons (N).QUESTION 3 A physics student lifts the SCIkilogram barbell to a height of 057 meter over his head 5 limes in one minute. What is a power delivered by the student? Give your answer in Watts (W). Note: only count work done by the student when the barbell moves up. Disregard work done when the barbell moves down to return back to the initial position. The associated picture l5 here: httpszlfwwwdropbox.comfsr'qlgucz355lthol'ScreenWeZUShotll/UEOZUEZ11724U/020at%2010.53.12%20AM.png?dl:O