Question

All Physicsts over here plz help in these questions!!!!!!!!!

Answer 1

Hello!

First one we can use that PE=mgh so we have

4.37*10^5J/(9.12*10^3kg*9.80m/s^2)= 4.89m

Second one we can use Newton’s Second Law
F=ma and in this case F=mg so we have

g= 3.28*10^-2N/6*10^-3kg = 5.47m/s^2

Hope this helps. Any questions please ask. Thank you.

Answer 2

1. Answer: Height = 4.8 m

Gravitational potential energy,
`P.E. = mgh`

where, m is mass of the body, g is the acceleration due to gravity and h is the height.

It is given that, location is on Earth.

`P.E. =4.37* 10^5 J\\ m=9.12 * 10^3 kg\\ g=9.8 m/s^2`

`\Rightarrow h=(P.E.)/(mg)=(4.37* 10^5 J)/(9.12 * 10^3 kg * 9.8 m/s^2)=4.8 m`

2. Answer:
`5.46m/s^2`

Weight is a force which an object exerts due to its mass under gravity.

weight = mass × acceleration due to gravity

⇒ acceleration due to gravity = weight/ mass

It is given that the weight,
`w= 3.28* 10^(-2) N`

mass of the object,
`m=6* 10^(-3) kg`

`\Rightarrow a=(w)/(m)=(3.28* 10^(-2) N)/(6* 10^(-3) kg)=5.46 m/s^2`