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OTHER LAWS. I. NEWTON’S 1 st LAW Also called the law of Inertia. Inertia is not a force It is a property of matter It is the tendency of an object to.

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Presentation on theme: "OTHER LAWS. I. NEWTON’S 1 st LAW Also called the law of Inertia. Inertia is not a force It is a property of matter It is the tendency of an object to."— Presentation transcript:

1 OTHER LAWS

2 I. NEWTON’S 1 st LAW Also called the law of Inertia. Inertia is not a force It is a property of matter It is the tendency of an object to resist change.

3 B. Actual Law An object at rest will remain at rest or an object in motion will stay in motion until a net force acts on it. Book on table Satellite in space Seatbelts in cars

4 C. Types of Forces F f = force of friction F N = normal force F sp = Spring Force F T = Tension F g = Force of gravity (weight) F c = Centripetal force

5 II. NEWTON’S 3 rd LAW For every action, there is an equal and opposite reaction. We are talking about forces here! Ex. Space Shuttle F gas F Shuttle

6 EXAMPLES Jumping out of a boat Action – you pushing on a boat Reaction boat pushing back on you. 2 different object go in two different directions with the same force.

7 PROBLEM A 50 kg bucket is lifted by a rope. Find the Tension. Now it is started from rest and is lifted 3.0 m and is now moving with a velocity of 3.0 m/s. If the rope breaks at 525 N, does it break? F t FgFg F net = F t - F g 1 st – find net acceleration. 2 nd – find net force. 3 rd - draw a FBD. 4 th – find Tension on rope.


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