The answer is A. <span>Some work input is used to overcome friction. </span>
Centripetal force is given by F= mv²/r.
Given: m = 0.5 kg, v = 3 m/s, r = 0.5 m
Putting values,
F= mv²/r = 0.5× 3²/0.5 = 9 N
that would be the energy from the core. because of the fact that ht eearths core is producing 45mill killawhats and giggawats
The static frictional force is greater than the kinetic frictional force, so the static frictional force is greater than 1200 N.
There are correlation and causation between the force of the finger and the movement of the books
