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Q1. An accelerometer in a control system consists of a 3.65 g object sliding on a horizontal rail. A low-mass spring is connected between object and a flange at one end of the rail. Grease on the rail make static friction negligible, other than rapidly damps out vibrations of a sliding object. When subject to a steady acceleration of 0.500 g the object must be located 0.350 cm from its equilibrium position. Find out the force constant required for the spring.

Q2. A car is driven 115 km west and then 80 km southwest. What is the displacement of car from the point of origin (magnitude and direction)?

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