The car's speed is 240km/4hr= 60km/hr.
There's not enough information given in the question to determine its velocity.
It's a simple machine, consisting of a rigid bar that rotates about a fixed point which is known as "Fulcrum" (most important part), It <span>affects the effort, or force and do the amount of work
Hope this helps!</span>
Radial acceleration is given by

where

then

Now

Using the relation


Putting into rpm
Answer:
abiotic
Explanation:
i think but dont take my word for it
I think this is correct, but I am not entirely certain.
Find the force constant of the spring:
F = - KX
(0 - 62.4) = -K(0.172m)
-362.791 = -K
362.791 N/m = K
Find the work done in stretching the spring:
W = (1/2)KX
W = (1/2)(362.791)(0.172m)
W = 31.2 J