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Example 1 - A bird feeder in your yard has a total mass of 3.0 kilograms and is supported as shown. What is the force on the top wire?
The bird feeder is not falling so the forces must be balanced - no resultant force in any direction. Looking up and down, the only force upwards is the force on the top wire and the only force downward is the weight of the bird feeder. So the free body diagram would look like:
Example 2 - If you pull on a 20 kg crate with 20 N, the crate will not move, because this force just balances the frictional force. If a little more force will start the crate moving what would the coefficient of friction have to be?
What is Normal Force?? Force exerted upon an object that is in get in touch with another stable object. If a book is resting upon a surface, then the surface is exerting an up
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A scooterist is racing at a speed of 72 km per hour. If the radius of the wheel is 20 cm, find the angular speed of the wheels. Ans) 72kmph=20m/s 20cm=0.2m; v=rw w=v/r w=20/0
Explain the Kinetic Theory Kinetic theory looks at how each of these steps adds more internal kinetic energy (jiggle energy) to the material. A solid is a framework of atoms an
A 12 Volt battery is associated across a parallel combination of two capacitors C1 and C2. The capacitance of C2 is double that of C2.
Q. Dissimilarity between an intrinsic and extrinsic semiconductor? Answer:- Semiconductors permit only a little amount of light to pass through them. They are of two n-kin
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