Question
A block of weight 3.8N is launched up a 30 degree inclined plane of length 2.25m by a spring with spring constant 2.35kN/m and maximum compression 0.10m. The coefficient of kinetic friction is 0.50. How much kinetic energy does it have at the top of the incline?
I get 2.4J am I wrong, if so please help in showing hoe this process woorks out. It would be much appreciated.
I get 2.4J am I wrong, if so please help in showing hoe this process woorks out. It would be much appreciated.
Answers
Compute the stored energy in the compressed spring. It is (1/2)k x^2 = 11.75 J. The work done againt friction going to the top of the incline is
W = 3.8N*cos 30*Uk*X = 3.70 J
The work done against gravity going to the top is
3.8N*s1n 30 * X = 4.28 J
The remaining kinetic energy is 3.77 J
Round it off to 3.8
W = 3.8N*cos 30*Uk*X = 3.70 J
The work done against gravity going to the top is
3.8N*s1n 30 * X = 4.28 J
The remaining kinetic energy is 3.77 J
Round it off to 3.8
Related Questions
A block of weight w = 25.0 N sits on a frictionless inclined plane, which makes an angle = 25.0 with...
the weight of the block on the table is 402 N and that of the hanging block is 210 N. Ignore all fri...
The block of weight 50 N is pressed against the spring so as to compress it a distance 0.6 m when it...
he weight of the block in the drawing is 77.0 N. The coefficient of static friction between the bloc...
A block whose weight is 34.0 N rests on a horizontal table. A horizontal force of 27.2 N is applied...
A block of weight 41.8 N is hanging from a rope. The tension in the rope is 24.4 N, pulling upward o...
A block of weight 30.9 N is hanging from a rope. The tension from the rope is pulling upward on the...
A block of weight 30.9 N is hanging from a rope. The tension from the rope is pulling upward on the...
A block of weight 3.8 N is launched up a 30 ∘ inclined plane of length 2.20 m by a spring with sprin...
A block of weight 3.8 N is launched up a 30 ∘ inclined plane of length 2.10 m by a spring with sprin...