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Classical Mechanics
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity
of 8.00 m/s at an angle of 20.0° below the horizontal. It strikes the ground 3.00 s later.
(a) How far horizontally from the base of the building does the ball strike the ground?
(b) Find the height from which the ball was thrown.
(c) How long does it take the ball to reach a point 10.0 m below the level of launching?
of 8.00 m/s at an angle of 20.0° below the horizontal. It strikes the ground 3.00 s later.
(a) How far horizontally from the base of the building does the ball strike the ground?
(b) Find the height from which the ball was thrown.
(c) How long does it take the ball to reach a point 10.0 m below the level of launching?
Classical Mechanics
Find the potential energy function associated with the force
(1) F=–YZ i–XZ j–XY k
(2). F=cx³
(1) F=–YZ i–XZ j–XY k
(2). F=cx³
Classical Mechanics
When I lift a chair and hold it it stores potential energy
But when I start moving by holding it in the same position at the same height what energy conversions take place
What happens to that potential energy??
But when I start moving by holding it in the same position at the same height what energy conversions take place
What happens to that potential energy??
Classical Mechanics
A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark.What is the displacement? (Define increasing numbers to be the positive direction and decreasing numbers to be the negative direction.)
Classical Mechanics
a car 5 kg drives at 10m/s.the car drives faster for 15s which provides 20j more of energy. if it takes 100j to overcome friction then what is the final speed of the car
Classical Mechanics
A one peso coin is dropped from the leaning tower of Pisa. It atarts from rest and falls freely. Compute its position and velocity after 2.0,3.0and 4.0 seconds.
Classical Mechanics
A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark.What is the displacement? (Define increasing numbers to be the positive direction and decreasing numbers to be the negative direction.)
Classical Mechanics
What is the graph for each of the following for a Simple harmonic motion?
1. displacement vs time
2. velocity vs time
3. acceleration v time
4. Kinetic energy vs time
5. velocity vs displacement
6. acceleration vs displacement
7. Kinetic Energy vs displacement
1. displacement vs time
2. velocity vs time
3. acceleration v time
4. Kinetic energy vs time
5. velocity vs displacement
6. acceleration vs displacement
7. Kinetic Energy vs displacement
Classical Mechanics
To a massless spring of length LO a mass m is hung, which causes a periodic change in the length L(t) of the spring.
(a) In case the suspended mass is released from rest with unstretched spring [L(t=0)=L0}, determine the change in the length L(t) as a function of time and set L(t) in a diagram.
(a) In case the suspended mass is released from rest with unstretched spring [L(t=0)=L0}, determine the change in the length L(t) as a function of time and set L(t) in a diagram.
Classical Mechanics
A 1.50 kg wooden block is hanging motionless from a 2.00 m massless string. A 125 g arrow is
shot at 55.0 m/s at the block and sticks into it, causing the block to swing.
- What is the maximum height the block/arrow system will swing with respect to the
original position of the block? (0.912 m)
- What would be different about this situation if the arrow passed through the block, but
slowed down in the process? Explain in terms of momentum and energy
shot at 55.0 m/s at the block and sticks into it, causing the block to swing.
- What is the maximum height the block/arrow system will swing with respect to the
original position of the block? (0.912 m)
- What would be different about this situation if the arrow passed through the block, but
slowed down in the process? Explain in terms of momentum and energy
