A wooden block with mass 1.35 kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 30.0° (point A). When the spring is released, it projects the block up the incline. At point B, a distance of 7.70 m up the incline from A, the block is moving up the incline at a speed of 6.05 m/s and is no longer in contact with the spring. The coefficient of kinetic friction between the block and incline is 0.40. The mass of the spring is negligible. Part A Calculate the amount of potential energy that was initially stored in the spring. Express your answer in joules. 15 ΑΣΦΑ U₁ 122.2271875 Submit Submit Previous Answers Answer X Incorrect; Try Again; 5 attempts remaining ? J

A wooden block with mass 1.35 kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 30.0° (point A). When the spring is released, it projects the block up the incline. At point B, a distance of 7.70 m up the incline from A, the block is moving up the incline at a speed of 6.05 m/s and is no longer in contact with the spring. The coefficient of kinetic friction between the block and incline is 0.40. The mass of the spring is negligible. Part A Calculate the amount of potential energy that was initially stored in the spring. Express your answer in joules. 15 ΑΣΦΑ U₁ 122.2271875 Submit Submit Previous Answers Answer X Incorrect; Try Again; 5 attempts remaining ? J