The A string on a violin has a fundamental frequency of 440 Hz H z . The length of the vibrating portion is 30 cm c m , and it has a mass of 0.36 g g . Part A Under what tension must the string be placed

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.