1. A small metal weight is suspended from a spring scale as shown in this illustration

Spring Scale

N

1.0

2.0

3.0

4.0- The spring is measure here at 4.0 N

5.0

6.0

7.0

8.0

9.0

10.0

• What is the gravitational force acting on the weight? Explain.

• What is the net force acting on the weight? Explain.

a) W = -4N,   b)  F_net = 0

Explanation:

The suspended weight of the spring ladder is subjected to two forces: the elastic force of the spring directed downwards and the gravitational force directed downwards.

              - W = 0

             F_{e} = W

             F_{e} = W = 4 N

a) the gravitational force is the weight of the body

             W = -4N

b) as the system is in equilibrium, the net force is zero

             F_net = 0

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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