A stone is whirled at the end of a rope 25m long makes 8 complete revolution in two seconds find its centripetal force and centripetal acceleration. Pls if it is correct i promise.
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Fc = 1579 [N]; ac = 15790.9 [m/s^2]

Explanation:

To solve this problem we must use the following formula that relates the centripetal force to the speed of rotation and the radius of rotation, respectively.

a)

where:

Fc = centripetal force [N]

m = mass [kg]

v = tangential velocity [m/s]

r = radius [m]

We have to give a mass to the stone in order to solve the problem, for this case we will say that the mass is equal to 100 [g].

The tangential velocity is equal to the product of the angular velocity (rotational) by the turning radius

v = w * r

But we need to convert the angular velocity units of revolutions per second to radians per second

v = 25.13*25 = 628.31[m/s]

Now replacing in the first equation:

b)

The second part will be only:

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.