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Find the order and degree of the differe...

Find the order and degree of the differential equation 7y’-3y=0.
a) Order -1, Degree-2
b) Order -2, Degree-3
c) Order -1, Degree-1
d) Order -3, Degree-2

Text Solution

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The correct Answer is:
A, B, D

In this problem the rod has a mass 1 kg
a. `tau_(net)=tau_(net)xxalpha` ltbr. `rarr 15=(1.75+0.084)alpha`
`rarr alpha=1500/(175+8.4)=1500/183.4`
`=8.1rad/s^2 (g=10)`
`=8.01rad/s^2 (if g=9.8)`

`b. T_1-m_1g=m_1a`
`rarr T_1=m_a+m_1g`
`=2(a+g)=2(alphar+g)`
`=2(8xx0.5+9.8)`
`=2xx13.8`
`=27.6N` onthe first body
in the second body
`rarr m-2g-T_2=m_2a`
`rarr T_2=m_2g-m_2a=5(g-a)`
`=5(9.8-8xx0.5)`
`=5xx5.8=29N`
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