A miniature winch driven by an electric motor is used to hoist a 250 g research probe vertically.
The electrical current in the motor is 0.75 A and the potential difference across its terminals is 8.0 V.
The total electrical energy supplied to the motor during the lift is 48 J.
Calculate the duration of the lift. Give your answer to two significant figures.
State the equation linking gravitational potential energy (GPE\text{GPE}GPE), mass (mmm), gravitational field strength (ggg), and height (hhh).
The probe gains 1.5 J of gravitational potential energy during the climb. Calculate the height to which the probe is lifted. (Use g=10 m/s2g = 10\text{ m/s}^2g=10 m/s2)
