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asambeis [7]
3 years ago
8

7. The S.l. unit for force is A. kg C. m/s B. m/s2 D. N

Physics
1 answer:
netineya [11]3 years ago
5 0
D.N(Newton) this is the S.I unit for force
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Difference between impulse and impulsive force
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What factors affect the chemical properties of seawater
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How do distinctive rock strata support the theory of continental drift?
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4 0
4 years ago
A particle of mass 4.0 kg is constrained to move along the x-axis under a single force F(x) = −cx3 , where c = 8.0 N/m3 . The pa
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Answer:4.58 m/s

Explanation:

Given

mass of Particle m=4 kg

F=-cx^3

a=\frac{F}{m}

a=-\frac{cx^3}{m}

a=-\frac{8x^3}{4}

a=-2x^3

v\frac{\mathrm{d} v}{\mathrm{d} x}=-2x^3

vdv=-2x^3dx

integrating

\int_{6}^{v_b}vdv=\int_{1}^{-2}-2x^3dx

\frac{v_b^2-6^2}{2}=-\frac{1}{2}\left [ \left ( -2\right )^4-\left ( 1\right )^4\right ]

\frac{v_b^2-36}{2}=-0.5\times 15

v_b^2=36-15

v_b=\sqrt{21}

v_b=4.58 m/s

6 0
3 years ago
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