Download Physics A NRG Quest Topics Define Work. Define Power. Calculate

Physics A NRG Quest Topics
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Define Work.
Define Power.
Calculate the Work done by a force.
Define Kinetic NRG.
Define Potential NRG.
Calculate Gravitational and Elastic Potential NRG.
Calculate TME.
Apply the Law of Conservation of NRG to analyze motion.
Apply the Law of Conservation of NRG to determine the speed of
a body.
1. m=60kg
H=80m
H=35m
PE__________
PE=__________
PE=__________
KE__________
KE=__________
KE=__________
V___=0m/s___
V=__________
V=__________
2. A pilot is pulling his baggage through the terminal at a constant velocity.
He is applying
0
a force of 130N at an angle of 55 to the horizontal on his baggage. a.) If the pilot pulls
his baggage 35m, how much Work has he done on the baggage? b.) Find the Work done on
the baggage by the force of friction over the 35m. c.) Find the net Work done on the
baggage. e.) Find the work done by the normal force on the baggage over the 35 m.
3. You are designing the launcher for a pin ball machine. The ball has a mass of
50.0g and will start from rest and must have a speed of 11.8 m/s when it leaves
the launcher and can only travel 9cm. If there is no friction, what must be the
spring constant of the spring for the launcher to work?
4. A 0.300kg potato is tied to a string with a length of 3.0m, and the other end of
the string is tied to a rigid support. The potato is held straight out horizontally
from the point of the support, with the string pulled taut, and is then released.
Determine the speed of the potato at the lowest point of the motion. Determine
the tension in the string at the lowest point of the motion.
5. While traveling along at 96 km/h, a 14.6 kN auto runs out of gas 16 km
from a service station. Neglecting friction, if the station is on a level 15.7 m
above the elevation where the car stalled, how fast will the car be going
when it rolls into the station, if in fact it gets there?
6. A marble, starting at rest, rolls down a linear ramp. The ramp starts at a
height of 0.53m above the bottom and the slope is 1.03m long. The marble
has a mass of 120g.
a. Determine the speed of the marble at the bottom of the ramp.
b. A spring with a spring constant of k=20N/m is placed 1m in front
of the ramp so that the marble will hit the end of the spring. How
far will the spring need to compress to bring the marble to a stop?