Dynamic Trolleys

A pair of these trolleys are used for investigation on momentum velocity, acceleration etc. Both the trolleys are identical and each consists of a two rectangular wooden blocks 300 mm long moving on three low friction wheels. The trolley is fitted with spring loaded" impulse rod. Rod has three positions to provide different impulses which is triggered by a release pin, In the front of each trolley two holes are drilled and fitted with corks. With removable metal pins at each end to enable trolleys to be stacked or to provide anchoring points for accelerating cords.

(a) Trolleys with rubber wheels fitted with ball bearing
(b) Trolleys with plastic wheels fitted on bushes