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tresset_1 [31]
3 years ago
15

First, let us consider an object launched vertically upward with an initial speed v. Neglect air resistance. Part B) At the top

point of the flight, what can be said about the projectile's kinetic and potential energy?
A). Both kinetic and potential energy are at their maximum values.
B).Both kinetic and potential energy are at their minimum values.
C).Kinetic energy is at a maximum; potential energy is at a minimum.
D).Kinetic energy is at a minimum; potential energy is at a maximum.
Physics
1 answer:
harina [27]3 years ago
3 0

Answer:

Option d is the correct option Kinetic energy is minimum while as potential energy is maximum

Explanation:

At the top most point of the flight since it cannot reach any further up in the vertical direction thus the potential energy at this position shall be maximum. Now since the total energy of the projectile is conserved so the remaining kinetic energy shall be minimum at that point so as the sum of the kinetic and potential energies remain constant.

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→Fo
irakobra [83]

Answer:

The mass of the block, M =T/(3a +g)  Kg

Explanation:

Given,

The upward acceleration of the block a = 3a

The constant force acting on the block, F₀ = Ma = 3Ma

The mass of the block, M = ?

In an Atwood's machine, the upward force of the block is given by the relation

                                     Ma = T - Mg

                                      M x 3a = T - Ma    

                                    3Ma + Mg = T

                                       M = T/(3a +g)  Kg

Where 'T' is the tension of the string.

Hence, the mass of the block in Atwood's machine is, M = T/(3a +g)  Kg

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