A painter of mass 120.0 kg stands on a platform of mass 50.0 kg and pulls on two
ID: 2136002 • Letter: A
Question
A painter of mass 120.0 kg stands on a platform of mass 50.0 kg and pulls on two ropes which hang over pulleys, as shown. He pulls each rope with a force of 50.0 N. Assuming a coordinate system where +y is up, calculate the y-component of the acceleration ay. ay can either be positive or negative depending on the direction of the acceleration.
A painter of mass 120.0 kg stands on a platform of mass 50.0 kg and pulls on two ropes which hang over pulleys, as shown. He pulls each rope with a force of 50.0 N. Assuming a coordinate system where +y is up, calculate the y-component of the acceleration ay. ay can either be positive or negative depending on the direction of the acceleration.Explanation / Answer
50 + 50 - ( 50 + 120)g = (50 + 120)a
a = - 9.21 m/s2