Question

How much force does it take to start moving the 50 kg box?

Answer 1

Explanation:

By Newton's second law,

Force is propotional to rate of change of momentum and we finally have

F = dp/dt =d (mv)/dt = dm/dt*v+ m*dv/dt (But as per Einstein’s equation mass can be assumed to be constant at velocities <<< speed of light ) so this equation can be simplified to

=m*dv/dt = ma

Hence force required is equal to mass*acceleration = 50kg * 2ms^-2

Answer 2

A force of 100N is required to move the object.

Let's have a look at the solution.

We are given that:

• Mass of the moving object = 50 Kg
• Acceleration of the object = 2 m/s^2
• To find: = Force required to speed up the moving object
• Solution:
• The formula is F = ma
• F = 50 Kg x 2 = 100 N

Thus, the force required to move the object of mass 50 kg is 100N.