2 years ago

Find f (the force) in relation to moments.

Physics

1 answer:

Masja [62]2 years ago

7 0

Answer:

Explanation:

i7tigp79ug978uyioh;

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Calculate the work done by an 85.0-kg man who pushes a crate 4.00 m up along a ramp that makes an angle of 20.0° with the horizo

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Answer: Given mass of man = 85kg

Distance crate was pushed = 4m

Force exerted on crate = 500N

Angle inclined = 20°

Let Total force exerted Ft = (mg * sin(20)) + 500

Ft =( 85*9.81* sin20°) + 500

Ft = 758N

Work done Wd = Ft * distance

Wd = 785 * 4 = 3.14 * 10^3J

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3 years ago

A clay ball (mass = 0.25kg) has a rightward momentum of +1.75 kg∙m/s. A second clay ball (mass = 0.25 kg) has a leftward momentu

julia-pushkina [17]

$\begin{gathered} E1=\frac{1}{2}m_1v_1^2+\frac{1}{2}m_1v_2^2 \\ where: \\ m_1=m_2=0.25kg \\ v_1=7m/s \\ v_2=-7m/s \\ so: \\ E1=\frac{1}{2}0.25(7^2)+\frac{1}{2}0.25(7^2) \\ E1=6.125+6.125 \\ E1=12.25J \end{gathered}$

Answer:

d. 12.25J

------------------------

According to the conservation of energy:

$\begin{gathered} E1=E2 \\ so: \\ E2=12.25J \end{gathered}$

Answer:

b. 12.25

-------------------------------

$P1=m_1v_2+m_2v_2=+1.75-1.75=0$

Answer:

d. 0 kg∙m/s

-----------------------------------------

Using conservation of momentum:

$\begin{gathered} P1=P2 \\ so: \\ P2=0 \end{gathered}$

Answer:

b. 0 kg•m/s

3 0

1 year ago

(i feel so dumb )

Ne4ueva [31]

The correct answer choice is C.
Hope this helps

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2 years ago

Find f (the force) in relation to moments.​

Find f (the force) in relation to moments.