Chapter 5, Problem 60P

Figure 5-45 shows a 5.00 kg block being pulled along a friction- less floor by a cord that applies a force of constant magnitude 20.0 N but with an angle θ(t) that varies with time. When angle θ = 25.0°, at what rate is the acceleration of the block changing if (a) θ(t) = (2.00 × 10⁻² deg/s)t and (b) θ(t) = −(2.00 × 10⁻² deg/s)t? (Hint: The angle should be in radians.)

Figure 5-45