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The robot moves the particle A (mass M) in the vertical plane using polar coordinate formulas

r (t) = 1.2-0.6sin (2πt) [m]

θ (t) = 0.5-1.5cos (2πt) [rad] in accordance with.

Determine the acceleration of the object in the r direction [m/s^2]at time t0 = 1.9 s

Use units [m / s²]

GIVE ANSWER TO THREE DECIMALS

90
120
60
15
150
30
r(t)
180
r(x)
210
330
240
300
270
A(t), 4(x)

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