A motorized conveyor belt in a logistics center is used to lift packages of identical mass from the ground floor to a loading platform at a fixed height.
To speed up operations, the supervisor increases the speed of the conveyor belt motor so that a greater number of packages are lifted to the platform in a given time.
How does this adjustment affect the work done in lifting each individual package and the useful power output of the motor?
Work done per package increases; useful power output decreases.
Work done per package increases; useful power output increases.
Work done per package remains unchanged; useful power output decreases.
Work done per package remains unchanged; useful power output increases.
95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.