Wednesday

October 1, 2014

October 1, 2014

Posted by **Lindsay** on Tuesday, January 8, 2008 at 9:19pm.

Again, I'm lost. Any help is much appreciated.

- Physics -
**tchrwill**, Wednesday, January 9, 2008 at 9:26amA 2.6 m long, 16 kg piece of plywood is sitting on a pair of sawhorses. The sawhorses are .3 m from the left end and .5 m in from the right end of the plywood. A 4 kg circular saw is sitting 1 m in from the left end of the plywood. How much force is each sawhorse applying? Assume the plywood is of uniform constant.

.............6.1538kg/m

...............\/

---------------------------------

....../\.....\/.........../\

..3m..Rl.7m.4kg...1.8m....Rr.5m

Rl and Rr are the left and right reactions respectively.

Taking the summation of moments about the left reaction, we have

-.3(6.1538).15 + 4(.7) + 2.3(6.1538)1.15 - 1.8rR.

Solve for Rr.

Take the summation of vertical forces to derive the left reaction.

......RL................Rr

**Answer this Question**

**Related Questions**

physics - A cat walks along a uniform plank that is 4 m long and has a mass of 7...

physics - A bench is made of a 3 meter long plank with a mass of 12kg and 2 ...

physics - A bench is made of a 3 meter long plank with a mass of 12kg and 2 ...

Physics (3) - An explosion in a rigid pipe shoots out three pieces. A 6 g piece ...

algebra - To repair his kitchen subfloor, John cut a rectangular piece of ...

physics - A 50 foot see-saw has 4 kids sitting on it. A 62 lb. girl sits on the ...

chemistry gas laws - In a science demonstration, 4 to 6 plastic garbage bags are...

math - you want to take an 8-ft.wide piece of plywood through a 36-inch-wide ...

English Grammar - She is sitting in back of me. She is sitting in the back of me...

Physics - You are holding a shopping basket at the grocery store with two 0.51 ...