269,509 views
45 votes
45 votes
Joe is carrying a load of building supplies and likely injuring his back by supporting 882 in of weight. Calculate the mass of what he is carrying

User Arnaudauroux
by
2.8k points

2 Answers

26 votes
26 votes

Final answer:

Joe is carrying a load with an approximate mass of 90 kg, calculated using the weight of 882 N (force) and the gravitational acceleration of 9.8 m/s².

Step-by-step explanation:

The question relates to the calculation of forces in a physics context, more specifically biomechanics, which is part of the physics curriculum. To calculate the mass of the load Joe is carrying, we use the gravitational force equation, which is the weight (W) divided by the acceleration due to gravity (g), where g is approximately 9.8 m/s². If Joe is carrying a weight of 882 in (which we interpret as a typo for Newtons, as inches are a unit of length, not weight), then the calculation for mass (m) would be:

m = W / g

m = 882 N / 9.8 m/s²

m ≈ 90 kg

So the mass Joe is likely carrying is approximately 90 kg. Incorrect lifting techniques, such as using the back instead of the legs, could lead to back injuries due to the large forces involved in lifting.

User Tim Keating
by
2.9k points
10 votes
10 votes

Answer:

Answer is c because in exothermic reactions, energy releases.in cellular respiration,atp+h20 (water) = adp+ pi + energyso celullar respiration is exothermic and releases energy

Step-by-step explanation:

Answer is c because in exothermic reactions, energy releases.in cellular respiration,atp+h20 (water) = adp+ pi + energyso celullar respiration is exothermic and releases energy