A 45.91 kg dog jumps on a....

Question

A 45.91 kg dog jumps on a 84.82 kg bed. As the dog walks around on the bed, what is the average force that the bed applies to the dog?

Answer 1

This is a trick question. The answer has nothing to do with the mass of the bed.

No matter what the dog is walking on, as long as it is able to support the dog's weight,

it must apply force equal to its weight.

That is, the dog's mass times gravitational acceleration:

45.91 kg × 9.81 m/s² = 450.4 N