What frequency will the force make the object vibrate

Reference no: EM1322235

Q1. Damping is negligible for a 0.15kg object hanging from a light 6.30 N/m spring. A sinusoidal force with amplitude of 1.70N drives the system. At what frequency will the force make the object vibrate with amplitude of 0.440m?

Q2. A person driving her car at 49 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection . The intersection is 15 m wide. Her car's maximum deceleration is -5.4 m/s2, whereas it can accelerate from 49 km/h to 70 km/h in 6.3 s. Ignore the length of her car and her reaction time. If she hits the brakes, how far will she travel before stopping? If she hits the gas instead, how far will she travel before light turns red?

Reference no: EM1322235

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