Answer:
The acceleration of the crate is .
Explanation:
Given that,
Force, F = 750 N
Mass of the crate, m = 250 kg
The coefficient of friction is 0.12.
We need to find the acceleration of the crate. The net force acting on the crate is given by :
f is frictional force,
So, the acceleration of the crate is . Hence, this is the required solution.
Answer:
222.2N/m
Explanation:
Given parameters:
Elastic potential energy = 4000J
Extension = 6m
Unknown:
Spring coefficient = ?
Solution:
The elastic potential energy is the energy stored within a string.
It is expressed as;
EPE = k e²
k is the spring constant
e is the extension
4000 = x k x 6²
8000 = 36k
k = 222.2N/m
Answer:
Explanation:
Given:
vertical height of oil coming out of pipe,
diameter of pipe,
length of pipe,
density of oil,
viscosity of oil,
Now, since the oil is being shot verically upwards it will have some initial velocity and will have zero final velocity at the top.
<u>Using the equation of motion:</u>
where:
v = final velocity
u = initial velocity
Putting the respective values:
<u>For Reynold's no. we have the relation as:</u>