पाए<br>तल<br>२. क्रियापद भनेको के हो:<br>(<br>

What force must the worker exert to get the box moving & what force must the worker exert to accelerate the box at 0.1 meter

photoshop1234 [79]

Since static friction is the minimum force required to just start the motion of a stationary object.

Here if we need to start an object from rest then we required F = 700 N

So for the first part of the above problem Force will be F = 700 N

Now if the box is already moving then we will have to use kinetic friction force between box and floor

now we can write the equation of net force as

$F - F_k = m*a$

here

$F_k = kinetic friction = 220 N$

$m = mass = 500 kg$

$a = acceleration = 0.1 m/s^2$

now we will have

$F - 220 = 500* 0.1$

$F = 220 + 50 = 270 N$

3 0

3 years ago

||||| A ball on a porch rolls 60 cm to the porch’s edge, drops 40 cm, continues rolling on the grass, and eventually stops 80 cm

3241004551 [841]

Answer:

$d = 145.6 cm$

Explanation:

first ball rolls on the porch by total distance

$x_1 = 60 cm$

Then again it will move on horizontal floor

$x_2 = 80 cm$

also in vertical direction it will drop down

$y = 40 cm$

so we have

$x = 60 + 80$

$x = 140 cm$

$y = 40 cm$

so magnitude of net displacement of the ball is given as

$d = \sqrt{140^2 + 40^2}$

$d = 145.6 cm$

8 0

3 years ago

The forces in (Figure 1) are acting on a 4.3 kg object.

harina [27]

Answer:

19computer deaseas

Explanation:

#having learn

5 0

3 years ago

Suppose you have a hypothesis you believe to be correct what should you do to make you become a theory

LenKa [72]

D. Collect more evidence and try to convince the other scientist

6 0

4 years ago

Find equailent resistance

vovikov84 [41]

Answer:

0.71ohms

Explanation:

AC and CB are in series hence the total resistance is 3+2=5ohms

AD and DB are in series hence the total resistance is 3+2=5ohms

These resistances are parallel to resistance AB

Let the equivalent resistance be R.

For resistances in parallel

Hence the total resistances are:

5//1//5

1/R =1/5 + 1/1 +1/5 = 1+5+1 /5 = 7/5

Hence the total resistance is R= 1/ 7/5 = 1×5/7= 5/7=0.71ohms

4 0

3 years ago

पाएतल२. क्रियापद भनेको के हो:(​

पाएतल२. क्रियापद भनेको के हो:(