RESEARCH FORUM

Sleeping in Space How do astronauts sleep in space? Find out with this interesting video presented by Canadian astronaut Chris Hadfield. After a hard day's work astronauts need somewhere to sleep, only there isn't enough room for beds on the International Space Station so they need to get a little creative. It might sound like a difficult thing to do but those sleep pods look like a nice place to get some rest, especially in the comfort of zero gravity!

Parallelogram and Triangle law of forces    If two forces acting at a point are represented in magnitude and direction by the two adjacent sides of a parallelogram, then their resultant isrepresented in magnitude and direction by the diagonal passing through the point. Parallelogram law of forces If two forces acting at a point are represented in magnitude and direction by the two adjacent sides of a parallelogram, then their resultant isrepresented in magnitude and direction by the diagonal passing through the point. Explanation Consider two forces Vector P and Vector Q acting at a point O inclined at an angle θ as shown in Fig.. The forces Vector P and Vector Q are represented in magnitude and direction by the sides OA and OB of a parallelogram OACB as shown in Fig. The resultant Vector R of the forces Vector P and Vector Q is the diagonal OC of t...