What happens to acceleration if mass is decreased?

Answer 1

If my density remains the same, as it tends to do if you're a human (and my height stays constant also) then halving my radius would result in a 4 fold decrease in mass. So whatever the ratio of the new radius to the old, you must square it to find the new mass to old mass ratio. This is because the mass with constant height is a two dimensional function of area, whereas the radius is only one dimensional. Eg. Radius is now 80% of original. New mass is 80% * 80% = 64% of original. If you're talking 3 dimensional radius reduction, like a sphere, then you CUBE the ratio. So 80% * 80% * 80% = 51.2%. So reducing the radius by only 20% results in nearly halving the mass!

Answer 2

Let start with the equation of acceleration:

acceleration = force / mass

It depends on what is happening to object when mass decreases.

If the force reminds the same. Then according to this equation the object rate of acceleration would increase.

Basically a rocket would be an example of this.

The force of the rocket fuel being emptied out of the rocket would decrease the mass of the rocket and therefore increase the rate of acceleration as the fuel is being burned.

Answer 3

If mass is decreased while force remains constant, acceleration will increase. This is because acceleration is inversely proportional to mass according to Newton's second law (F = ma). With a smaller mass, the same force will produce a greater acceleration.

Answer 4

When mass of object decreases then acceleration of object will increases.

F=ma