Attached to the rear-view mirror of a car is a small crystal of mass 50 g on a string. When the car is stopped at a light, the crystal hangs vertically. When the light turns green, the driver accelerates and notices the crystal makes an angle of=5degrees with respect to the vertical.

Part (b)Input an expression for the magnitude of the car's acceleration in terms of the variables provided - the acceleration due to gravity and .

Part (c)What is the car's acceleration in m/s²?

Part (d)When the car is no longer accelerating, what is the new angle, ₂ in degrees?