Burl and Paul have a total weight of 992 N. The tensions in the ropes that
support the scaffold they stand on add to 2662 N. What is the weight (in
N) of the scaffold? Please report your answer with the abbreviated form of
the unit.

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?