With 2D dynamics, we can explain the orbit of the planets around the Sun, the grandfather clock, and the perfect angle to throw a snowball to nail your nemesis as they run away from you.

Gravitational acceleration is \(g= 10\) m/s\(^{2}\).

The gravitational acceleration is \( g =10 \text{ m/s}^2. \)

A block is hung by a string from the roof of a van. The van drives along a straight, flat road at a constant speed of \( 15 \sqrt{2} \text{ m/s}, \) and the block hangs vertically down. Then the van goes around an unbanked curve of radius \( 45.0 \text{ m} \) while maintaining the same speed, and the string tilts by an angle of \( \theta .\) Find the value of \( \theta. \)

The gravitational acceleration is \( g= 10 \text{ m/s}^2. \)

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