Question

The weight of the body at a certain place is 49N. The acceleration due to gravity at the point is 9.8m/s. What will be the mass and weight of the object at the place where acceleration due to gravity is zero? For Grade 9.​

Answer 1

Answer:

480.2N

Explanation:

because mass into Newton is N

Answer 2

Solution:

Weight of the object at the certain place = 49 N

The acceleration due to gravity at the point is 9.8m/s.

The formula to find the weight of the object:

$\sf{\implies\:Weight=Mass\times\:Gravity}$

So, in order to find mass:

$\sf{\implies\:\dfrac{Weight}{Gravity}=Mass}$

Substituting the values we know in the equation:

$\sf{\longrightarrow\:Mass=\dfrac{49}{9.8}}$

$\sf{\longrightarrow\:Mass=5\:kg}$

The mass of the object when it is at the place where the acceleration due to gravity is zero, is 5 kg.

Now, we are asked to find the mass and weight of the object where the acceleration due to gravity is 0 m/s.

Mass is a constant value and does not change from place to place.

Hence the mass is 5 kg.

The weight of the object is the product of the mass and the acceleration due to gravity.

Applying the equation here:

$\sf{\longrightarrow\:Weight=5\times0}$

$\sf{\longrightarrow\:Weight=0\:kg}$

Hence the mass and weight of the object at a place where the acceleration due to gravity is 0 m/s is:

$\sf{\bullet\:Mass=5\:kg}$

$\sf{\bullet\:Weight=0\:N}$