Homework Help: Physics

Posted by Physics on Thursday, July 9, 2009 at 11:41pm.

My question is

A block is given an intial speed of 4.0 s^-1 m up the 22 degree plane

How far up the plane will it go?

How much time elapses before it returns to its starting point? Ignore friction.

Ok my teacher said use this to find acceleration a = g sin è and then I know where to go from there but were does this formula come from?

Physics - bobpursley, Thursday, July 9, 2009 at 11:46pm
g is downward. Since the block cannot slid downward, it can only slide along the surface. So the component of g in the direction of the surface is gsin22.

http://www.lastufka.net/lab/cars/why/ramps.gif

Notice the two components: down the ramp, mgsintheta, and the other component of g, perpendicular, mgcosTheta. That perpendicular force assists friction, but in this case we are ignoring it.

Answer this Question

Related Questions

Physics - for some reason I keep on getting 1.2 seconds for (b) and .86 m for (a...
physics B - A block is given n intial speed of 3.0 s^-1 m up the 22.0 degree ...
Phyiscs - A lbock is given an intial speed of 4.0 s^-1 m up the 22 degree plane ...
Physics - A crate is given an initial speed of 3.1 m/s up the 29 degree plane ...
Physics - A 3.3 kg wooden block is placed on 22 degree inclined plane and is ...
physics - A 3.3 kg wooden block is placed on 22 degree inclined plane and is ...
physics - A block is projected up a frictionless inclined plane with initial ...
physics - A block is projected up a frictionless inclined plane with initial ...
physics - A block is projected up a frictionless inclined plane with initial ...
physics - A block is projected up a frictionless inclined plane with initial ...

For Further Reading

First Name:
School Subject:
Answer: