A2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. the left end is put on the tailgate of the truck.
however the tailgate is tilted a bit, so it only contacts the board at a point 25.0 cm from the end. a 2.50 kg sledge hammer is placed 0.500 meters from the retaining wall.

a)find the force acting on the board by the tailgate.

b)find the force acting on the board by the retaining wall.

Explanation:

Given that:

From the image we can visualize the given situation.

Consider the given plank to be mass-less and having a uniformly distributed mass of 1.5 kg per meter.

Now in the balanced condition:

.......................(1)

...........................(2)

is the force acted by the tailgate on the plank.

Substitute the value from (2) into (1):

is the force acted by the wall upon the plank.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.