Alarge beaker of water is placed on a scale, and the scale reads 40 n. a block of wood with a weight of 10 n is then placed in the beaker. it floats with exactly half of its volume submerged. assuming that none of the water spilled out of the beaker when the block was added, what does the scale read now? (3 points)[ ] 40 n [ ] 45 n [ ] 50 n

F = 50 N

Explanation:

As we know that block is floating in the water with half of the volume submerged into it

So we will have

at equilibrium position the buoyancy force on the block will be equal to the weight of the block

Now the weight machine will measure the net normal force for which we have

so here we have

a and c

c is 100% but i am confused in a

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.