A box is suspended by two ropes as shown below.The scales read FL = 425 N and FR

Question

A box is suspended by two ropes as shown below.The scales read FL = 425 N and FR = 601 N.

The problem is, no scale is perfect. Let's assume for the time being that the angles are quite accurate, but you know based on your past experience that these scales can be off by as much as 3 N. This uncertainty propagates through any calculation that involves the measured quantities.

By how much (in N) could your estimation of the weight of the box be off?

A box is suspended by two ropes as shown below.The scales read FL = 425 N and FR = 601 N. The problem is, no scale is perfect. Let's assume for the time being that the angles are quite accurate, but you know based on your past experience that these scales can be off by as much as 3 N. This uncertainty propagates through any calculation that involves the measured quantities. By how much (in N) could your estimation of the weight of the box be off?

Explanation / Answer

W = 524sin45 + 601sin60 =891 N

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