Question

1. A student investigates how much pressure she exerts on the ground when she is standing up.(a) The weight of the student is 520 N.(i) State the formula linking weight, mass and gravitational field strength (g).(ii) Calculate the mass of the student.mass =kg

Answer 1

ANSWER

The mass of the student is 53.00kg

EXPLANATION

Given that;

The weight of the student = 520N

Follow the steps below to find the mass of the student

Step 1: Define weight

Weight s defined as the force acting on an object due to acceleration due to gravity

Step 2: Write the formula linking the mass and the acceleration due to gravity together

$\text{ W = mg}$

Where

W is the weight of the body

m is the mass of the body

g is the acceleration due to gravity

Step 3: Substitute the given data into the formula in step 2

$\begin{gathered} \text{ Recall, that g = 9.81 m/s}^2 \\ \text{ 520 =mass }\times\text{ 9.81} \\ \text{ Isolate mass} \\ \text{ Mass = }\frac{520}{9.81} \\ \text{ Mass = 53.00 kg} \end{gathered}$

Hence, the mass of the student is 53.00kg