True or false: objects fall toward earth at a rate of 9.8 m/s because of centripetal force.

1 answer:

Citrus2011 [14]3 years ago

4 0

Sadly, no. The statement kind of has some appropriate words in it, but it's badly corrupted. Objects don't fall to Earth at a rate of 9.8 m/s, and the force that accelerates them downward is not a centripetal one.

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Read 2 more answers

Can anyone help me with this question?

yan [13]

Answer: The spring potential energy must equal or exceed the energy to raise the mass to loop height and the minimum kinetic energy needed to keep the mass in contact with the top of the loop

kd² = 5Mrg

h = kd²/2Mg

Explanation:

at top of loop

Mv²/r = Mg

v² = rg

½kd² = ½Mv² + Mgh'

½kd² = ½M(rg) + Mg(2r)

½kd² = 2.5Mrg

kd² = 5Mrg

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h = kd²/2Mg