How much thermal energy is created

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Q1. A 1600 {rm N} crate slides 15 {rm m} down a ramp that makes the angle of 35^circ with the horizontal. If the crate slides at a constant speed, how much thermal energy is created?

Q2. A person who weighs 68 kg steps onto a spring scale in the bathroom, and spring compresses by 0.79cm. (a) what is the spring constant? (b) What is the weight of another person who compresses the spring by 0.34cm?

Reference no: EM1313287

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