Question

1. Use conservation of energy and ,for b part, its connection to work by a non-conservative force. A 0.55 kg block is placed against a spring. The spring is compressed 0.25m and then the block is held in place. According to information, the spring constant of the spring is 250N/m. As shown, the spring and mass are on a 30.0 degree incline. The block is now released. Answer the following 2 questions. (a) If the inline is frictionless, how fast is the block moving when it reaches the 2.4 meter mark along the incline? (b) If the incline did have friction, what kinetic coefficient of friction (?) would be required to bring the block's velocity to zero at the 2.4 meter mark? [10 points] 2. Starting from Newton's laws and conservation of mechanical energy for a satellite: [5 points] By what factor must an object's speed in circular orbit be increased to reach escape speed from its orbital altitude? 3. Starting with Newton's laws.....[5 points] . A white dwarf is a collapsed star with roughly the Sun's mass compressed into the size of Earth. What would be (a) the orbital speed and (b) the orbital period for a spaceship in orbit just above the surface of a white dwarf?

          1. Use conservation of energy and ,for b part, its connection to work by a non-conservative force. A 0.55 kg block is placed against a spring. The spring is compressed 0.25m and then the block is held in place. According to information, the spring constant of the spring is 250N/m. As shown, the spring and mass are on a 30.0 degree incline. The block is now released. Answer the following 2 questions. (a) If the inline is frictionless, how fast is the block moving when it reaches the 2.4 meter mark along the incline? (b) If the incline did have friction, what kinetic coefficient of friction (?) would be required to bring the block's velocity to zero at the 2.4 meter mark? [10 points]

2. Starting from Newton's laws and conservation of mechanical energy for a satellite: [5 points]
By what factor must an object's speed in circular orbit be increased to reach escape speed from its orbital altitude?

3. Starting with Newton's laws.....[5 points]
. A white dwarf is a collapsed star with roughly the Sun's mass compressed into the size of Earth. What would be (a) the orbital speed and (b) the orbital period for a spaceship in orbit just above the surface of a white dwarf?

1. Use conservation of energy and ,for b part, its connection to work by a non-conservative force. A 0.55 kg block is placed against a spring. The spring is compressed 0.25m and then the block is held in place. According to information, the spring constant of the spring is 250N/m. As shown, the spring and mass are on a 30.0 degree incline. The block is now released. Answer the following 2 questions. (a) If the inline is frictionless, how fast is the block moving when it reaches the 2.4 meter mark along the incline? (b) If the incline did have friction, what kinetic coefficient of friction (?) would be required to bring the block's velocity to zero at the 2.4 meter mark? [10 points]

2. Starting from Newton's laws and conservation of mechanical energy for a satellite: [5 points]
By what factor must an object's speed in circular orbit be increased to reach escape speed from its orbital altitude?

3. Starting with Newton's laws.....[5 points]
. A white dwarf is a collapsed star with roughly the Sun's mass compressed into the size of Earth. What would be (a) the orbital speed and (b) the orbital period for a spaceship in orbit just above the surface of a white dwarf?

Added by Elijah A.

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