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ladyrx2020
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Spring, Block, KE, PE, Incline Problem: Why is KE=ZERO??
A 250 g block is pressed against a spring of force constant 1500 N/m until the block compresses the spring 8.0 cm. The spring rests at the bottom of a ramp inclined at 60.0 degrees to the horizontal. Using energy considerations, determine how far up the incline the block moves from its initial position before it stops if:
a) the ramp exerts no friction force on the block
b) if the coefficient of kinetic friction is 0.400
Can someone explain to me why is the change in kinetic energy = to zero??
The solutions says KE is zero because initial and final states are stationary. What does that mean? Doesn't the box move...
Maybe I don't fully understand the concepts...
Answers:
a) 2.26 m
b) 1.84 m
A 250 g block is pressed against a spring of force constant 1500 N/m until the block compresses the spring 8.0 cm. The spring rests at the bottom of a ramp inclined at 60.0 degrees to the horizontal. Using energy considerations, determine how far up the incline the block moves from its initial position before it stops if:
a) the ramp exerts no friction force on the block
b) if the coefficient of kinetic friction is 0.400
Can someone explain to me why is the change in kinetic energy = to zero??
The solutions says KE is zero because initial and final states are stationary. What does that mean? Doesn't the box move...
Maybe I don't fully understand the concepts...
Answers:
a) 2.26 m
b) 1.84 m