H2P-52
Types of potential energy
H2 Physics · JC 1 · Hard · Types of potential energy
A 4.0 kg block slides down a smooth slope inclined at 25° to the horizontal. From rest, it moves 1.5 m down the slope before compressing a spring by a further 0.40 m and momentarily coming to rest. What is the spring constant k? (Take g = 9.81 m s⁻².)
- 4.0×10 N m⁻¹
- 2.0×10 N m⁻¹
- 3.0×10 N m⁻¹
- 5.0×10 N m⁻¹
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