Question

4. An Olympic javelin thrower exerts an unbalanced force of 130 Newtons on a javelin, giving it an acceleration rate of 8 m/s2. What is the mass of the javelin (long spear)?

Answer 1

Mass of the javelin is 16.25 kg.

Explanation for the problem.

Consider the given data:

Unbalanced force applied on the javelin, F= 130 Newtons

Acceleration gained by the javelin, $a = 8m/s^{2}$

Write the expression for the unbalanced force based on the newtons second law.

$F = m*a$

Here m is the mass of unbalanced forces.

Substitute the values in the above equation.

$130 =m*8\\m =\frac{130}{8}\\ m = 16.25 kg$

Hence, the mass of the javelin is 16.25 kg.