Q. 18

Calculate the work done by a person in lifting a load of 20 kg from the ground and placing it 1m high on a table

Answer :

Given Data:

Mass= 20kg

Height = 1m

Work is done against gravity so minimum force needed to lift the mass is (20×g), where g is acceleration due to gravity

Work done= force× displacement

=20 (kg) × 10(m/s2)× 1(m)

=200 (J)

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Define work and write its units.

AP - Physics & Chemistry