Question

A boy who normally weighs 300N on a spring scale suddenly jump upwards. The
scale reading jumps to 400N. What is boy's maximum acceleration upwards.
(g = 10 m/s)
1) 2 m/s
2 ) 3.3 m/s? 3) 4.67 m/s?​

Answer 1

Answer:

The answer will be 10 m/s^2

Explanation:

According to the problem the weight of the boy is 300 N

As the acceleration increased up to 400 N

The change in weight  = 400 -300 = 100 N

Now from the given weight the mass of the body, m = 300/10

Now we know acceleration = force/mass = 300/300/10 = 10 m/s^2

Therefore the upwards acceleration is 10 m/s^2