Question

think a number multiplied by 5 add 6 multiply 4 add 9 multiply 5 and state the result how did you get the number​

Answer 1

Answer:

(a) Mass of the man, m = 70 kg

Acceleration, a = 0

Using Newton’s second law of motion, we can write the equation of motion as:

R – mg = ma

Where, ma is the net force acting on the man.

As the lift is moving at a uniform speed, acceleration a = 0

∴ R = mg

= 70 × 10 = 700 N

∴ Reading on the weighing scale = 700 / g = 700 / 10 = 70 kg

(b) Mass of the man, m = 70 kg

Acceleration, a = 5 m/s2 downward

Using Newton’s second law of motion, we can write the equation of motion as:

R + mg = ma

R = m(g – a)

= 70 (10 – 5) = 70 × 5

= 350 N

∴ Reading on the weighing scale = 350 g = 350 / 10 = 35 kg

(c) Mass of the man, m = 70 kg

Acceleration, a = 5 m/s2 upward

Using Newton’s second law of motion, we can write the equation of motion as:

R – mg = ma

R = m(g + a)

= 70 (10 + 5) = 70 × 15

= 1050 N

∴ Reading on the weighing scale = 1050 / g = 1050 / 10 = 105 kg

(d) When the lift moves freely under gravity, acceleration a = g

Using Newton’s second law of motion, we can write the equation of motion as:

R + mg = ma

R = m(g – a)

= m(g – g) = 0

∴ Reading on the weighing scale = 0 / g = 0 kg

The man will be in a state of weightlessness.

Answer 2

Answer:

let the number is 2

let the number is 2so

let the number is 2so2×5=10

let the number is 2so2×5=1010+6=16

let the number is 2so2×5=1010+6=1616×4=64

let the number is 2so2×5=1010+6=1616×4=6464+9=73

let the number is 2so2×5=1010+6=1616×4=6464+9=7373×5=365

What's the logic .....