Ex. 51: Find the maximum speed with which a car can be driven safely along a curved path of radius 100 m. If the coefficient of friction between the tyres of the car and the road surface is 0.2. (g = 9.8 m/s²).
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Q: How did you arrive at this answer? Pressure due to car = FA2 = 120000.1018= 117878.19 Pa
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Q: Suppose that 2.3 of work is needed to stretch a spring from its natural length of 36 cm to a length…
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Q: A 6.22-kg piece of copper that is heated absorbs 728 kJ of energy. If the copper starts at 20.5° C,…
A: Solution:-Given thatmass of piece of copper (m)=6.22 kgHeat absorbed by the copper (Q)=728 kJInitial…
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