An electronic device displays, on a display, a user interface that includes one or more user interface objects. The device detects a first input on the touch-sensitive surface at a location that corresponds to a first user interface object of the one or more user interface objects. Detecting the first input includes detecting a change in intensity of the first input on the touch-sensitive surface from a first intensity to a second intensity, different from the first intensity. In response to detecting the first input, the device obtains a change in a value of a respective simulated physical property that changes in response to changes in intensity of the first input on the touch-sensitive surface, and updates an appearance of the user interface by progressing a first animation between a first state and a second state based on the change in the value of the respective simulated physical property.