# How to Calculate and Solve for Reaction: Lift Moves Down | Motion

The image above represents reaction: lift moves down. To calculate reaction: lift moves down, three essential parameters are needed and these parameters are mass (m), acceleration (a)Â andÂ acceleration due to gravity (g).

The formula for calculating reaction: lift moves down:

R = m(g – a)

Where;

R = Reaction
m = Mass
g = acceleration due to gravity
a = Acceleration

Let’s solve an example;
Find the reaction when the mass is 28, acceleration is 9 and acceleration due to gravity is 9.8.

This implies that;

m = Mass = 28
g = acceleration due to gravity = 9.8
a = Acceleration = 9

R = m(g – a)
So, R = 28(9.8 – 9)
R = 28(0.80)
R = 22.4

Therefore, theÂ reactionÂ is 22.4 N.

### Calculating the Mass when the Reaction, the Acceleration and the Acceleration due to Gravity are Given

m = R / gÂ – a

Where;

m = Mass
R = Reaction
g = acceleration due to gravity
a = Acceleration

Let’s solve an example;
Find the mass when the reaction is 42, the acceleration is 8 and the acceleration due to gravity is 9.8

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This implies that;

R = Reaction = 42
g = acceleration due to gravity = 9.8
a = Acceleration = 8

m = R / g – a
Then, m = 42 / 9.8 + 8
m = 42 / 17.8
m = 2.359

Therefore, theÂ massÂ isÂ 2.359.

### Calculating the Acceleration when the Reaction, the Mass and the Acceleration due to Gravity are Given

a = g – (R / m)

Where;

a = Acceleration
R = Reaction
m = Mass
g = acceleration due to gravity

Let’s solve an example;
Find the acceleration when the reaction is 35, mass is 19 and acceleration due to gravity is 9.8.

This implies that;

R = Reaction = 35
m = Mass = 19
g = acceleration due to gravity = 9.8

a = g – (R / m)
So, a = g – (35 / 19)
a = 9.8 – 1.84
a = 7.96

Therefore, theÂ accelerationÂ isÂ 7.96.

### Calculating the Acceleration when the Reaction, the Mass and the Acceleration are Given

g = (R / m) + a

Where;

g = acceleration due to gravity
R = Reaction
m = Mass
a = Acceleration

Let’s solve an example;
Find the acceleration due to gravity when the reaction is 40, the mass is 4 and the acceleration is 7.

This implies that;

R = Reaction = 40
m = Mass = 4
a = Acceleration = 7

g = (R / m) + a
Then, g = (40 / 4) + 7
g = 10 + 7
g = 17

Therefore, theÂ acceleration due to gravityÂ isÂ 17.

### How to Calculate and Solve for Reaction: Lift Moves Down Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the reaction: lift moves down.

To get the answer and workings of the reaction: lift moves down using the Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ forÂ NGN 1,500Â perÂ annumÂ to have utter access to all functionalities.
You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator