help !

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Questions

The following questions were asked by visitors named help !.

A 95 N block rests on a table. The sus- pended mass has a weight of 22 N. What frictional force is required to keep the blocks from moving? Answer in units of N.

Block A (70 N) and block B (21 N) are connected by a massless cord and are at rest. Given ìs = 0.8. What is friction A ?

Block A (60 N) and block B (40 N) are connected by a massless cord and are AT REST. Given ìs = 0.8. The friction on A is : 1. 40 N 2. 0 N 3. 24 N 4. 48 N 5. 20 N 6. 60 N 7. 16 N

A tetrahedron has three mutually perpendicular faces and three mutually perpendicular edges of lengths 2, 3, and 4 cm, respectively. Find its volume.

Answers

The following answers were posted by visitors named help !.