can you answer number 77 please. s andes.You are designing another dolly-sandbag system for a different actor in theperformance. The mass of the dolly and actor combined is 76 kg, and themass of the sandbag is 18 kg. The coefficient of kinetic friction between thedolly and the stage floor is 0.20. What is the acceleration?NEED A HINT? Go online to your eText Sample Problem for stepped out support.(15) You are designing one last sandbag-dolly system for the performance.This time, two actors will be on the dolly. The mass of the dolly and actorscombined is 94 kg, and the mass of the sandbag is 35 kg. The coefficientof kinetic friction between the dolly and the stage floor is 0.20. What isthe acceleration?emetev2neixYou decide to change the mass of the sandbag for the two actors to reducethe acceleration. The mass of the dolly and actors combined is still 94 kg,and the coefficient of kinetic friction between the dolly and the stage floor is0.20. If you want the dolly to accelerate at 1.9 m/s², what should the mass ofthe sandbag be?ITI BOMBASAX311 A truck is pulling an 85-kg rock attached by a rope. The coefficient of friction oqge er ni bné isbetween the rock and the ground is 0.32. The truck applies 295 N of force to ert zoob wohl nuitenbthe rock. Determine the net force and the acceleration.(18) For a physics experiment, you stand on a scale in an elevator. You observethat the scale only registers 88 percent of your actual weight as the elevatorbegins to descend to a lower floor. Based on the data, determine theacceleration of the elevator.An Atwood machine is used in a stage production to make an actress appearto fly up and out of view of the audience. The system consists of a 52-kgactress and a 58-kg sandbag connected via a rope over a pulley. The sandbagis released from rest. Determine the magnitude of the acceleration for boththe actress and sandbag. Assume the rope and pulley are massless.(80) You are pulling on a rope to move two boxes, box 1 and box 2, that areconnected by a spring. The rope is connected to box 1, which is moving onrollers; so you can ignore friction. The spring connects it to box 2, which ison a surface with a coefficient of friction μ. If the boxes move with a constantvelocity, how much does the spring stretch?(81) You are pulling on a rope to move two boxes, box 1 and box 2, that areconnected by a spring. The rope is connected to box 1, which is on a surfacewith a coefficient of friction μ. The spring connects it to box 2, which ismoving on rollers, so you can ignore friction. If the boxes move with aconstant velocity, how much does the spring stretch?3 Forces on Systems89

Name: can you answer number 77 please. s andes.You are designing another dol
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Description: can you answer number 77 please. s andes.You are designing another dolly-sandbag system for a different actor in theperformance. The mass of the dolly and actor combined is 76 kg, and themass of the sandbag is 18 kg. The coefficient of kinetic fricti