Question

Help me mister brainly.

1. On Earth, a scale shows that you weigh 585 N. What is your mass? What would the scale read on the Moon (g = 1.60 N/kg)?

2. You place a 22.50-kg television on a spring scale. If the scale reads 235.2 N, what is the gravitational field at that location?

3. What is the mass of an object that can be accelerated horizontally at 4.4 m/s2 by a net force of 970 N?

4. ________________ is the condition where there are no contact forces acting to support the object and the object’s apparent weight is zero.

5. A crate is pushed east across a frictionless surface with a force of 240 N and pulled east by a rope with a force of 120 N. What is the net force on the crate?

Answer 1

#1

• Weight=585N

$\\ \rm\hookrightarrow mg=585\implies m=585/10=58.5kg$

Weight on moon is one sixth of earth

• Weight on moon=58.5/6=9.75kg

#2

$\\ \rm\hookrightarrow W=22.5(10)=225N$

• Gravitational field=235.2-225=9.8N

#3

$\\ \rm\hookrightarrow F=ma$

$\\ \rm\hookrightarrow m=F/a$

$\\ \rm\hookrightarrow m=970/4.4$

$\\ \rm\hookrightarrow m=220.4kg$

#4

• It is the centre of earth where g is 0

#5

$\\ \rm\hookrightarrow F_{net}=240-120=120N$

Answer 2

The correct answer is as follows

• 1. The scale read on the moon is 95.51N
• 2. The gravitational field is 10.5N/kg
• 3.The mass of the object is 220.45kg
• 4.Weightlessness is the condition
• 5.The net force on the crate is  360N

What is the Force?

• A force is a push or pull upon an object resulting from the object's interaction with another object.
• The S.I unit of the force is Newton Denoted by N
• Force = mass * acceleration

What is Weightlessness?

• Weightlessness is the condition where there are no contact forces acting to support the object and the object's apparent weight is zero.

How to solve the problem?

1.The scale shows the weigh on the earth is 585N

• The gravitational field on moon given is 1.60N/kg
• We need  to find the mass

So ,  On the moon ($g = 1.6 m/s^2$),

the same scale will show

= 1.6/mg

= 1.6/9.8 x 585 = 95.51 N

Hence the scale read on the moon will be 95.51N

2. How to find the gravitational field?

The mass of A television is 22.50-kg

•    The reading of the scale given is 235.2N
•     We need to find gravitational field

So. $F_{g} = mg$

Therefore , 235.2 = 22.50*g

Therefore , g = 235.2 N / 22.50 kg

g = 10.5N/kg

Hence the gravitational field is 10.5N/kg

How to find the mass of the object ?

We need to find the Mass of the object

•   The acceleration given is $4.4m/s^2$
•   The Net force given is 970 N  

So , According to the Force

F = m*a

970 = m*4.4

 m = 970/4.4

 m = 220.45kg

Hence , the mass of object is 220.45kg  

What is Weightlessness ?

• Weightlessness is the condition  where there are no contact forces acting to support the object and the object’s apparent weight is zero.

   How to calculate the net force?

5. The amount of force on a frictionless surface is 240 N

   The amount of force pulled by a rope is 120 N

The net force on the crate is

$F_{net} = F_{1}+F_{2}$

= 240 +120

= 360N  

Learn more about Gravitational field here

https://brainly.com/question/14080810

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