Question

Q:-solve and find the value of m and hence verify
$40 - 16(3m - 5) = - 10(4m - 8)$

Answer 1

$\huge{\bold☘}\mathfrak\pink{\bold{\underline{{ ℘ɧεŋσɱεŋศɭ}}}}{\bold☘}$

$\red{\bold{\underline{\underline{QUESTION:-}}}}$

Q:-solve and find the value of m and hence verify

$40 - 16(3m - 5) = - 10(4m - 8)$

$\huge\tt\underline\blue{Answer }$

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _✍️

════════════XXX═════════════

$⟹\bold{40 - 16(3m - 5) = - 10(4m - 8)}$

$⟹\bold{40 - 48m + 80 = - 40m + 80}$

$⟹\bold{40 + 80 - 48m = - 40m + 80}$

$⟹\bold{120 - 48m = - 40m + 80}$

$⟹\bold{120 - 80 = - 40m + 48m}$

$⟹\bold{40 = 8m}$

$⟹\bold{\red{m = \frac{40}{8} = 5}}$

$\mathcal{CHECK:-}$

$⟹\bold{40 - 16(3(5) - 5) = - 10(4(5) - 8)}$

$⟹\bold{40 - 16(15 - 5) = - 10(20 - 8)}$

$⟹\bold{40 - 16(10) = - 10(12)}$

$⟹\bold{40 - 160 = - 120}$

$⟹ \bold{- 120 = - 120}$

Therefore,L.H.S=R.H.S

════════════XXX═════════════

HOPE IT HELPS YOU..

_____________________

Thankyou:)

Answer 2

Answer:

ANSWER

Net acceleration is the resultant acceleration of centripetal acceleration and tangential acceleration thus find both of them as follows:

A

c

− be centripetal acceleration.

A

t

− be tangential acceleration

A

net

=

(A

c

2

+A

t

2

)

Now then,

A

c

is

R

V

2

=

10

25

=2.5m/s

2

A

t

is given as 2.m/s

2

, thus

A

net

=

(2.5

2

+2

2

)

=3.20m/s

2

.

Hence,

option (A) is correct answer.